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811LM

LiftMaster 1-btn Dip-Style Transmitter Sec+ 2.0 ***No Longer Available

  • Extreme range 1-btn encrypted DIP style remote control.
  • Easy to code 12 position dip switch offers up to 4 096 codes.
  • NOT compatible with the new Liftmaster 8550 and 8360 garage door openers.
  • Compatible with the 850LM Universal Receiver.
Programming InstructionsInstructions de programmationSell Sheet
41C4470

LiftMaster Gear & Sprocket Assembly for ATS211

  • Complete Gear and sprocket assembly for ATS211 ATS211R built from 1993 - 2003
Installation ManualManuel d'Installation
41A4885-5

LiftMaster MVIS Pulley/ Worm Gear Assembly

  • Gear and sprocket assembly for belt drive units after 2002.
  • Assembly includes: Spring washer thrust washer retaining ring bearing plate two roll pins drive gear and worm gear helical gear with retainer and grease.
Installation ManualManuel d'Installation
12-10029

Flanged Bearing 3/4" x 1-1/4" x 5/8"

41A5483C

LiftMaster Circuit Board Assembly *** To extent of Inventory

  • Assembly includes: Circuit board end panel and light socket
  • For chain drive units with two lights
  • Fits 2265 2565 7420 PD610 PV612C & PD612K
  • Last letter of the part # indicates revision date
  • Also known as 41A5483 41A5483B
.343_3-3/4"-RH

Torsion Spring .343 x 3-3/4" x 12ft RH Blue/Red

  • Wire size: .343
  • Inside diameter: 3-3/4"
  • Length: 12 ft
.262_2-5/8"-RH

Torsion Spring .262 x 2-5/8" x 12ft RH Red/Yellow

  • Wire size: .262
  • Inside diameter: 2-5/8"
  • Length: 12 ft
T2B-DS

Lynx 2-btn Transmitter Dip Switch 303 MHz

  • Ultra secure mid-size transmitter with 8 dip-switches for coding
  • 2-buttons provides control for 2 Lynx operators
  • Compatible with HomeLink in-vehicle remote control
  • Can be mounted on visor with saddle clip or carried on a keychain
  • Visor clip and 12V battery included
  • Will work with Lynx residential operators built from 2000 and up.
    • .......more details
Compatibility chart
H14G01

Hinge #1 x 14 gauge

  • Bright zinc plated 14-gauge steel hinge
  • For use with 7/16" diameter stem rollers
  • Full body hinge 2-3/4" wide
  • #1 position
  • Use between sections 1 and 2 or in the center position
  • Same as part number 241
    • .......more details
SEL2641R433-IP

Erone 2-Relay Stand Alone Receiver Pulse/Latch or Delayed Relay Output 433MHz

  • Up to 85 transmitter keys
  • 1 NO relay + 1 NO/NC relay (24VA)
  • Self-learning memorization
  • Standard pulse latched or timed relay output
  • Power requirements: 12/24Vac/dc
  • Dimensions: 105 x 45 x 28mm (4.3 x 1.75 x 1.1in)
    • .......more details
Instruction ManualSell SheetWireless System Chart
CONTACTOR044

Manaras Schneider Reversing Contactor 12A-24VAC

  • Reversing contactor with 24V coil
  • Same as part # LC2K12107B7
  • Demensions: 3.5" long x 2.25" wide x 2.25" high
  • Use 03-8024K as possible replacement
7470.115

Whiting Side Seal for insulated doors 115" Long

  • Fits Coldsaver and Tempguard
1920

Whiting Top Closure Mounting Plate for Insulated Doors

9931MT

Allstar 1-btn Mini Transmitter 109391 318 MHz ** NLA

  • Open/Close mini remote for 1 door
  • Compatible with Allstar and MVP receivers
  • Tab for key ring
  • Power: 12-volt battery
  • Codes: 19683 (set by nine trinary dipswitches)
  • RF frequency: 318 MHz
    • .......more details
Programming Instructions
232168

Capacitor 3/4 HP 220V 65 MFD

  • For LCO75 only
219109

Capacitor 1/3 HP 43-53 MFD 250V

  • For LDO33 only
4004-16FT

Aluminum Retainer only for Heavy Brush 16' Long 45 degree

  • For angle application (45 degree)
  • For use with Heavy Brush
4007-8FT

Aluminum Retainer only for Light Brush 90 degree

  • For angle application
  • For use with Light Brush or Vinyl Insert.
1008-1-3/8"

Bottom Nail-On for Wood Door Light Duty per foot

  • For 1-3/8" doors.
  • Color: Black
1004-2-24'

Aluminum Bottom Retainer 2" U-Shape with Reinforcement 24 ft***Actual Length 24'4"***

  • For door thickness 2"
1003-1-3/8-10'

Aluminum Bottom Retainer L-Shaped

  • For 1-3/8" thick doors.
1104-8FT-BROWN

Residential Side & Top PVC Weather-Strip with cap 8' Long - Brown (N)

  • Brown rigid vinyl retainer with brown flexible vinyl seal.
  • Dual fin vinyl.
  • Comes with cap to hide screws.
18-HWB-PAIR

Winding Bars Hex 18" Set of 2

  • Cold rolled hardened steel.
  • Hex shape keeps the bar from rolling away.
  • Machined to 7/16" at one end with a 1/2" outside dia. on the other end
  • Sold as a pair.
1104-16FT-SAND

Residential Side & Top PVC Weather-Strip with cap 16' Long - Sandstone (D)

  • Sandstone rigid vinyl retainer with sandstone flexible vinyl seal.
  • Dual fin vinyl.
  • Comes with cap to hide screws.
  • Also known as Taupe
1001-10-BLACK

Commercial Side & Top Weather-Strip 10' Long - Black

  • Aluminum retainer with black dual-fin vinyl
25-42-90

Extension Spring 7' Door - 90 lbs Light Blue

  • Double - Loop
  • 25" long 42" stretch 90 lb load
  • Sold individually
  • Same as part number 109
  • Rated for 10000 cycles
Spec Sheet
28-02201

Truck Door 2" Vertical Track & Right Angle Assembly 106.5" Curbside (RH) for Whiting Roll-Up Doors

  • SPECS: Length: 106.5" Fits door sizes: 91" - 100" high
  • Assembly includes: Right angle mounting track Vertical track and Torsion bracket
  • Cross Reference: W #2275-1
  • Galvanized steel 14 gauge construction
  • Tongue and groove for proper alignment at joints
27-20304

Truck Door Cable Drum and Bearing Curbside (RH) for Whiting Roll-Up Doors

  • Black nylon drum with bearing
  • Cable drums are grooved to prevent cables from binding or wearing prematurely.
  • Angle of cable slot determines Left or Right drum (Left = Red)
  • Cross Reference: 2548
26-40200

Truck Door Head Seal Only 96" Long for Roll-Up Doors

  • Seal molded from long lasting rubber
  • Cross Reference: T #69718 630300
Z9997

Hand Chain 25' for Manual Chain Hoists

  • Not SAE rated.
  • Designed for approx. 35 lbs
CB332A0500

Cable 3/32" 7x7 500' Galvanized

  • Galvanized cable 3/32" 7x7 500ft spool.
  • Cable break strength: 920 lbs.
Comparison charts
DL-4000-8

Dock Leveler Retainer Galv. Steel Weldable 8' Long

  • Weldable to sides of dock leveler
  • Use with 4007 aluminum retainer & light brush (not included).
  • Vinyl insert slides into this outer retainer.
08-11012

LiftMaster Bevel Gear 5/8" ID

  • Fits LiftMaster GH operator
SEDK2641A4

Erone Wireless Radio Keypad 433 MHz

  • Wireless RF Digicode® keypad.
  • Frequency: 433.92 MHz.
  • For automatic door opening in sequential mode.
  • 6 channels to control 6 different relays or 6 different RF receivers.
Programming InstructionsWireless System Chart
PBTL-3

Exterior 3-Btn O/C/S Control Station with Key Lockout Nema 4

  • Surface mount
  • Metal enclosure
  • Dimensions: 7" H x 2-3/4" W x 3-1/2" D
Sell sheet
.343-3-3/4-LH-C

Torsion Spring .343 x 3-3/4" x 144" LH Coated ** Price by Quote Only

  • Black Oxide coating
  • Wire size painted on spring
  • Wire size: .343 ID: 3-3/4" Length: 12 ft
MG00019

Micanan Flat Washer 13/16" ID x 1.5 OD (3/4" Shaft Size)

  • PRO-H/HB operator parts
  • 2 required per operator
25-01575

Truck Door Beverage Body Roll-Up Door Cable

  • Includes one (1) pair of cables
  • Zinc plated tear drop
  • Length: 110 inches
  • Cable eye: 1/4
  • Cable construction: 7 x 7 galvanized
M4A

Safety Inertia Brake 1-1/4" Bore 3576 Torque PCM4AP

  • Provides a bearing to support the shaft and prevent the fall of a door if sudden acceleration occurs.
  • Ideal for commercial and industrial use; specifically with rolling shutters and rolling doors.
  • Fits 1-1/4" shaft
  • Normal Torque: 3576 lbf.in
  • Locking Torque: 17516 lbf.in
  • Made in Italy
    • .......more details
Reference manualTechnical dataSell Sheet
TC2

Tri-Code Transmitter 2-btn Visor - DISCONTINUED

  • Tri-Code series 2 channel transmitter model TC-2
  • 300 & 310 MHz simultaneously
  • Each channel can be set on a seperate code format
  • Works with both 8 and 10 dip switch systems
  • Replacement: 380UT
CHD200

Chain Hoist Direct Drive Assembly 200 D

  • Sectional door Direct drive - 1" shaft
  • Requires keyed shaft
  • Includes: 2 shaft collars
  • Fits 3-3/8" min. offset
  • Includes 26' of chain
PL-A21-RPM-WHEEL

Lynx RPM Reader Wheel

M-VERSION-N4

Manaras Monitored Entrapment Protection Option Upgrade Mont + N4/12 Eyes

  • Upgrades added when purchasing a commercial operator
25-01435

Truck Door Stainless Cables 110" 5/16 eye 7x19 Pair for Roll-Up Doors

  • Works with both Whiting and Todco doors
  • Aluminum eye ends are used (only on 5/16" eye cables)
  • Cable size: 1/8"
PREM-SEL-XL-R16

Garex Ready to Install Door Special Order Premium Select XL R16

  • R16 Insulation - Long Panel - Available in steel (std colours) or aluminum (white and grey) - A variety of decorative windows can be added - Custom colours can be factory painted - Multiple hardware configurations are available to accomodate site requirements - Composite end blocks eliminates corrosion and wood deterioration
IRB-S

EMX Industries Mounting Screws for Photoeyes Sold as a Set of 2

  • Two sets of screws are required for each bracket installed
.312-2-5/8-LH-C

Torsion Spring .312 x 2-5/8" x 144" LH Coated ** Price by Quote Only

  • Black Oxide coating
  • Wire size painted on spring
  • Wire size: .312 ID: 2-5/8" Length: 12 ft
TXTA-KYPD

Pulse Universal Wireless Keypad

  • Programmable 4-digit code for continuous use.
  • Programmable TEMPORARY 4-digit code for programmable number of uses.
  • Multi-Brand Adaptable: Works with all Pulse receivers LM receivers (GreenOrange Red Purple and Yellow learning codes) and other receivers with 315MHz or 390MHz.
  • Powered by 9V battery. (One included in package)
86-925

Gel Connectors Red 19-26 AWG 100/Pkg

  • Internal moisture-resistant sealant protects wires from corrosion (indoor/outdoor use)
  • Quick one-step splicing – insert unstripped conductors and crimp
  • Use with solid copper single-conductor wire 19-26 AWG
  • Maximum insulated O.D. of .066 in. (1.68 mm)
  • Permanent connection- once crimped they cannot be reused
  • Use 12 or 3 ports as needed
    • .......more details
37520

Doorlec DC-2000 Electronic Circuit Board UL325 Requires Monitored Photocells

  • Works in all Doorlec model openers except R-99
  • Input power to board is 120V
  • 24V DC available on terminals 9 & 11
  • Accessory power on terminals 1 & 11
  • 1 = Stop. 2 = Com. 3 = Open 4 = Close
  • Can be adjusted for constant pressure
    • .......more details
L955W

LiftMaster Multi-Function Control Panel Secuirty+ 3.0

  • Includes a large push bar for garage door opener operation and a light control button.
  • Built-in learn button enables fast & easy programming of remotes keypads myQ® accessories and Wi-Fi garage door openers.
  • Compatible only with LiftMaster Security+ 3.0™ garage door openers.
  • Warranty: 1 Year
Installation ManualManuel d'InstallationCompatibility Chart 2025Comparison Chart 2025
A10U49

Erone Long Range UHF Reader U4GO 33FT

  • The readers which operate with AES128 encryption offer secure access in settings like parking facilities gated communities campuses hospitals and more
  • Stand-alone or Wiegand mode
  • Up to 33' (10 m) read range
  • Detects vehicles up to 50 mph (80 Km/h)
  • Includes receiver power supply and mounting bracket
.192-2-3/16-72-RH

Spring Wire .192 x 2-3/16" x 72" RHW Galvanized

  • .192 x 2.188" x 6'
PULLEY015

Manaras Double Pulley

ETBH-311-3/4HP

Doorlec 3/4 HP 115V Trolley Door Opener with solenoid brake

  • Trolley model heavy-duty door operator designed to provide smooth dependable operation of sectional overhead type doors.
GALV-306-6-R

Cut-to-Length Torsion Spring .306 x 6" Right Hand Wound Galvanized Red Price per Inch

  • Priced per inch - cones sold seperately
  • For factory installed cones use part no. C-6-INSTALLED
GALV-250-258-R

Cut-to-Length Torsion Spring .250 x 2-5/8" Right Hand Wound Galvanized Price per Inch

  • Priced per inch
  • For factory installed cones priced seperately - use part no. C-258-INSTALLED
10FALCON-EXXL100

BEA Falcon Motion Detector w/Exp Proof Housing 100ft Cable Mount 6.5' to 11.5'

  • FALCON EX combines a microwave activation sensor with an explosion-proof / flame-proof housing
  • Ideal for use in unique environments such as chemical manufacturing petroleum refining and agriculture.
  • FALCON EX can be mounted from 6.5' to 11.5' to fit any industrial application.
  • Nema4/IP66
  • Detection Zone: Falcon EX XL: 13’ × 6 ½’ @ 8 1⁄5’
  • Oerating termperature: -22-140F
    • .......more details
GALV-234-258-R

Cut-to-Length Torsion Spring .234 x 2-5/8" Right Hand Wound Galvanized Price per Inch

  • Priced per inch - cones sold seperately
  • For factory installed cones use part no. C-258-INSTALLED
041-0400-000

LiftMaster Door Shaft Collar

  • Fits with LiftMaster model #98032
K41-0383-000

LiftMaster Toroidal Transformer 1200lb / 120VAC-240VAC

  • For Maxum ops
K41-0374-000

LiftMaster 24VDC Motor Gear Box Encoder (Jackshaft 700)

  • Maxum J-700
GX-200-MG

Garex Ready to Install Door Multi-Grooved Special Order

  • 21" panel = 4 grooves 24" panel= 5 grooves
  • COMPLETE JOINT SEAL No air circulation between the panel sections eliminating thermal bridges.
  • Minimize the heat transfer between the inside and outside of your garage.
  • LIGHTWEIGHT AND ROBUST PANEL Polyurethane foam insulation pressure injected between the interior/exterior faces
  • WOOD END BLOCKS Suitable to receive steel end caps
  • HIGH-PERFORMANCE DESIGN Flexible rubber inserted into a PVC reinforced moulding offering a tightly sealed fit to the floor
    • .......more details
OSH-6534-M-N1-LH

Manaras Opera-SH 1 HP 600V 3 Ph Monitored Board w/N1 Eyes Left Hand

  • An ultra high-end heavy-duty V-belt drive industrial jackshaft operator
  • For use on Standard High and Vertical Lift sectional doors
  • Can also be used on Rolling doors and Grilles
  • Comes with a chain hoist for manual operation and a floor level engaging device
  • Clearence: side room required 16"
  • 25 cycles per day > 100 cycles per day
    • .......more details
OTBH-6533-M-N1

Manaras Trolley Operator 3/4 HP 600V 3 Ph Monitored w/N1 Photoeyes

  • Heavy-duty low headroom trolley operator designed for use on industrial standard lift sectional door
  • 25 cycles per hour 80 cycles per day
  • It incorporates a drum-band type solenoid brake.
  • Tracks are an extra 36 lbs per track
  • 3/4 HP & 1 HP operators come with #41 full roller chain
E/BLOP/118

Automatic Systems Option Double Limit Switch

OPH-6532-M-N1-LH

Manaras Opera-H 1/2HP 600V 3Ph Monitored ECB and N1 Photoeyes Left Hand

  • A heavy-duty industrial jackshaft operator.
  • For use on Standard High and Vertical Lift sectional doors.
  • Can also be used on Rolling doors or Grilles.
  • Comes with a self-engaging chain hoist for manual operation.
  • Clearence: side room required 15"
19-50HL-SS

Half (Offset) Link #50 Stainless Steel

  • For #50 chain
PRO-EJ-5011-U

Micanan 1/2HP 115V 1P internal lock sensor Jackshaft Monitored ECB N1 Eyes Left Hand

  • On board receiver with antenna
  • Continuous duty industrial motor with overload protection
  • Heavy duty 5L V-belt
  • Adjustable friction clutch
  • Solenoid brake (optional PRO-JB) recommended for large doors
  • 3/4" permanently lubricated & sealed precision ball bearings on pulley shaft
    • .......more details
70598.000

Todco 1" Nylon WondeRoller

  • Special Order Item
  • Perfect for dry freight applications this roller has been tested to last 5 - 10x longer than a standard roller.
  • A fully sealed bearing to keep dust and debris out
  • 2 Inch Track WonderRoller is a nylon-coated-stem track roller for larger application panel truck doors
  • Polymer vinyl roller head couples with this stem to suit the constant up-and-down and roadway jostling on a freight or other large truck
  • Roller prevents build up in bearings with a sealed external washer
    • .......more details
12-1009

PVC Strip 6" x .060 Standard Clear Smooth for Replacement Strip Curtain Sold per Foot

  • Suitable for most average applications.
  • Temperature Range: -20°F to 150°F (-28° C to 66° C).
  • Formulated with ingredients that meet USDA requirements for incidental food contact.
BEA-10EABA

BEA Bracket Accessory for Eagle Artek

2200-540

Linear Replacement Key for BG Snap Lock

CAMPLATE019

Manaras Cam Plate Opera C-Box

BPFL205

Bearing Flangette Retainer Only PFL-205 2-Hole

  • Does not include bearing
  • Steel Zinc plated finish
2100-1738

Linear Drive Shaft 1" Slide Gate HSLG

GLASS-ONLY

Elton Sealed Glass Only Clear Made to Order Quote Only

  • Thermal replacement glass only
11442

Limit Switch w/Roller Wheel Lever for MBAR

  • Used on M7BAR Ops
GALV-218-2-144-L

Torsion Spring .218 x 2" x 12ft LH Galvanized Yellow/Orange

  • Wire size: .218
  • Inside diameter: 2"
  • Length: 12 ft
  • Galvanized Stenciled
GALV-234-2-RH

Cut-to-Length Torsion Spring .234 x 2" Right Hand Wound Galvanized Price per Inch

  • Priced per inch - cones sold seperately
  • For factory installed cones use part no. C-200-INSTALLED
E/BLOP/121

Automatic Systems Option 1 Kit 2 LED Lights on Arm

  • Increases visibility of the arm on BL229 gate operator
OSH-6534-M-N1-RH

Manaras Opera-SH 1 HP 600V 3 Ph Monitored Board w/N1 Eyes RH

  • An ultra high-end heavy-duty V-belt drive industrial jackshaft operator
  • For use on Standard High and Vertical Lift sectional doors
  • Can also be used on Rolling doors and Grilles
  • Comes with a chain hoist for manual operation and a floor level engaging device
  • Clearence: side room required 16"
  • 25 cycles per day > 100 cycles per day
    • .......more details
MR00001

Micanan Brake Disconnect Cable 3/32" x 12" Long

041-0180-000

LiftMaster Wiring Harness Camera/LED Pod Dual Lens

  • This replacement kit is compatible with the follwoing models: 84501 84602 85702 85702 87504 87802 B4603T B4603TC B6713T B6713TCH B6753T B6753TCH
OTBH-6112-M-N1

Manaras Trolley Operator 1/2HP 120V 1Ph Monitored w/N1 Photoeyes

  • The OTBH is a heavy-duty low headroom trolley operator
  • Designed for use on industrial standard lift sectional doors
  • It incorporates a drum-band type solenoid brake
  • 25 cycles per hour 80 cycles per day
  • 1/2 HP operators come with # 48 (410) roller chain
  • Includes PHOTO-070
    • .......more details
IRB-RET-KIT

EMX Industries Universal Retroreflective Photoeye Nema 4X With Hood New UL325-2018 ** To Extent of Inventory

  • Kit includes photoeye with hood reflector with hood and mounting bracket
  • Retroreflective configuration
  • UL325-2018 compliant
  • Six (6) monitoring interfaces
  • 60 ft. operating range
  • Easy installation and set-up
    • .......more details
GHX-383-1HP-LH

Doorlec Explosion Proof Gear Head 1 HP 208V 3PH ECB Left Hand

  • Nema 7/9 control box
  • Electrical connections from motor to control box consists of hazardous location certified fittings and NEMA 7/9 O/C/S push-button station
50304

Doorlec Hoist Shaft Kit w/Disconnect Coupler

  • For models LJH LJHW
ZAP-8070

Zap Auto Lock 8070

  • 8070 Auto-Lock provides integrated security with an electronic solenoid locking system that releases a shoot bolt above a roller when door is stopped and withdraws prior to door operation
K41-0247-000

LiftMaster Limit System INSL24UL/IHSL24UL

  • Compatible with the following models: IHSL24UL INSL24UL
SPR41B18X1

Sprocket 41B18 1" Shaft 1/4" keyway

  • Same as MD-00145
7-6137

Richard-Wilcox 1x#31 Lock Joint Clip

  • Used with #461-0004 track
19-40100-SS

Roller Chain #40 Stainless Steel 100ft Pack

  • 100ft length Stainless Steel
OSH-6213-CONT-RH

Manaras Opera-SH 3/4 HP 240V 1Ph Contactor Right Hand

  • An ultra high-end heavy-duty V-belt drive industrial jackshaft operator
  • For use on Standard High and Vertical Lift sectional doors
  • Can also be used on Rolling doors and Grilles
  • Comes with a chain hoist for manual operation and a floor level engaging device
  • Clearence: side room required 16"
  • 25 cycles per day > 100 cycles per day
    • .......more details
Installation Manual
7500-FS-GALV

Fire Shutter Hot-Dipped Galv Interlocking Slats Made-to-Order

  • Shutters can be up to 13'- 6 inches wide and 12 feet tall with UL labels Class A B or C while still being able to function as normal counter rolling shutters.
  • Oversized fire shutters can be manufactured up to 20 feet wide
  • Model 7500 fire shutters can be installed with either a manual lift external motors a hand crank with or without automatic testing tubular models with the option of automatic testing
  • Along with UL labels that will automatically close the fire shutters for either 3 1½ or ¾ hours the fire shutters can also be manufactured with smoke protection
  • Available finishes: Hot-dipped galvanized steel with an optional baked-on gray polyester enamel coating or 304 stainless steel with a number 4 finish flat profile
  • The viscous speed governor can be set to automatically close the fire shutters at speeds of 6 inches per second up to 24 inches per second complying with NFPA 80 specifications.
    • .......more details
RR-3-11-6202

Roller 3" UHMW + Rubber 11" Stem Black

  • 3" UHMW tire covered with rubber
  • 6202 sealed precision bearing
  • 11" zinc plated stem
  • Rating: 200lb load; 100000 cycles of a 12' door
  • Helps quiet the operation of the sectional door
MINIDEPTH001-MOD

Manaras Minimum Depth Mod. OTH OTBH

  • Always use chain #41 with this mod.
K75-10388

LiftMaster Chain Tension Kit APT

  • Also known as: 305105371
CAPXLTK

LiftMaster Trim Kit and Back Kit

  • Trim ring and back box for CAPXL.
  • Conceal openings left from other systems in flush-mount Infinity L and Icon installations.
  • Dimensions: Outer Trim – 23.75” x 19.375”
GHW-383-2

Doorlec Industrial Gear Head Door Operator 2 HP 208V 3P with ECB and Nema4 modification

  • Extra heavy-duty industrial-type electric door operator for damp environments.
  • Worm gear reducer 40:1 ratio
  • #50 roller chain and sprockets from operator shaft to door shaft. (#60 chain optional)
  • Door speed: 7 inches per second (approx.)
  • Adjustable torque limiter (also called friction clutch)
  • Rotary type limit switches
    • .......more details