Skip to content
Home
Shop
0
0
Block
Home
ยป
Block
Showing the single result
Default sorting
Sort by popularity
Sort by average rating
Sort by latest
Sort by price: low to high
Sort by price: high to low
Filters
Sale!
Add to cart
LiftMaster Auxiliary Contact Block Relay, 1NO/1NC | LIF-K27-8002-K
$
33.59
Original price was: $33.59.
$
19.29
Current price is: $19.29.
Search products
Home
Shop
Your cart
(items: 0)
No products in the cart.
Start Shopping
Search products
Filters
Price
Min price
Max price
Filter
Price:
—
Categories
1
150# Flanges - Aluminum
2
3
4
8
ABC Direct Pressure
ABC Dry Chemical Fire Extinguisher
ABC Fire Extinguisher
ABC Stored Pressure Wheeled
Abrasive Belts
Abrasive Brushes
Abrasive Discs
Abrasive Sheets & Rolls
Abrasive Wheels
Abrasives
AC Adapter
AC Adapters
Access Card
Access Control Keypad
Access Control System
Access Controller
Access Door
Accessories Bag
Accessory Box
Accessory Tray
Actuator Arm
Adapter
Adapter Assembly
Adapter Cable
Adapter Extender
Adapter Plate
Adhesion Promoters
Adhesive Applicators
Adhesive Tag
Adjustable Pliers
Adjustable Wrenches
AED Training Unit
Air Mat
Alarm
Alarm Kit
Alignment Tool
All-Weather Boots
Aluminum Fittings
Aluminum Mess Kit
Analog Camera
Anchor Bolt
Ankle Holster
Antenna
Anti Impact Glove
Anti-Freez Recharge
Anti-Freeze Recharge
Anti-slip & Grip Tapes
Arm Bracket
ATV
Audio Cable
Audio Cables
Auger Bits
Automotive
Awls
Back Plate
Backpack
Badge Holder
Baffle Jacket
bag
Ball Valve
Ball Valves
Ball-Peen Hammers
Ballistic Protection
Balun
Bandages & Dressings
Barricade & Warning Tapes
Barrier Arm Assembly
Barrier Gate Arm
Barrier Gate Opener
Barrier Light Kit
Base Plate
Base Plate Cover
Basket Strainers
Baton
Batteries and Chargers
Battery
Battery Backup
Battery Box
Battery Charger
Battery Harness
Battery Ladder Hoist
Battery Tray
BDU Shirt
BDU Shorts
Bearing
Belt
Belt Clip
Belts
Bending
Bib and Brace
Bin
Binding Posts & Banana Sockets
Binocular
Bit Holders & Adaptors
Bit-Holding Screwdrivers
Bitholding Screwdrivers
Bits & Accessories
Bladder
blade
Blanket
Block
Blower
BNC Connector
Board Kit
Body Armor
Bollard
Bollard Pit
Bollard Pit Heater
Bolt
Bolt Cutters
Bonding Mounting & Transfer Tapes
Bonnets & Buffing Pads
Boot Care Kit
Box Panel Assembly
Box Wrenches
Bracket
Brake Kit
Brake Solenoid
Break Away Mechanism
Breathable Jacket
Buffing & Polishing Pads
Bullet Camera
Burnisher
Bushing
Button
Buzzer
Cabinet
Cable
Cable Connectors
Cable Cutter
Cable Cutters
Cable Management
Cable Organizer
Cable Retrieval System
Cable Roller
Cable Slitter
Cable Stripper
Cable Tester
Cable Tie Gun
Cable Ties
Cable Tools
Calipers
Callbox
Camera
Camera Kit
Camera Lens
Camera Mount
Camping Gear
Cap
Cap Assembly
Capacitors
Car Care Products
Car Electronics Accessories
Card Holder
Card Reader
Cargo Bag
Cargo Pants
Cargo Shorts
Carriage Assembly
Carrier
Carry Case
Carry Jacket
Carrying Case
Cart
Case Accessories
Casing
Casters
Caulks & Sealants
Cellular Access Control
Cellular Keypad with Proximity Card Reader
Chain
Chain and Hinge Cuffs Case
Chain Guard Kit
Chain Kit
Chain Tensioner Kit
Charger
Chemical Charge
Chip
Chisel
Chisels
Circuit Board
Circuit Breaker
Circuit Breakers
Circuit Protection
Clamp
Clamp Meter
Clamping
Class D Copper Fire Extinguisher
Claw Hammers
Cleaning Accessories
Cleaning Chemicals & Disinfectants
Cleaning Kit
Cleaver
Clip
Clip Mount
Cloth & Duct Tapes
Cloths & Wipes
Clutch
CO2 Fire Extinguisher
Coarse Polishing Compounds
Coat
Coax Cable Connectors
Coax Splitters
Coaxial Cable
Cold Chisel
Color Ribbon
Column Sentry
Combat Shirt
Combination Pliers
Combination Wrenches
Commercial Door Operator
COMMON
Compass
Composite Cable
Compression Spring
Computer Cases
Conduit Tools
Connecting Link
Connector
Connector Tool
Connector Wire
Connectors
Conspicuity Markings
Contactor
Control Board
Control Box
Control Panel
Controller
Controller Panels
Converter Kit
Coolants & Fluids
Cooling Hoses
Cord Covers
Coring Tool
Corrosion Protection Coatings
Counterweight
Coupler
Coupling
Cover
Coverall
CPR Training Manikin
Crank
Crew Neck Top
Crimp Terminals
Crimp Terminals Lugs & Wire Nuts
Crimp Tool
Crimpers
Crossbody Bag
Crowfoot Wrenches
Cushioning Materials
Custom Station
Cut Resistant Glove
Cutting Plier
Cutting Pliers
Cylinder
Cylinder Cage
Cylinder Lock
Data - Telecom Connectors
Data Testers
Dead Bolt
Dead-Blow Hammers
Deadbolt Lock
Defibrillator Electrode
Detection & Monitoring Equipment
Diagonal Cutters
Digital Video Recorder
Diodes
Direct Burial Cable
Disconnect Kit
Display Board
Disposable Respirators
Dome Camera
Door Closer
Door Deadlatch
Door Lock
Door Opener
Door Station
Downtube Assembly
Drains
Drift Punch
Drill Bit Sets
Drill Bits
Drive Belt
Drive Sprocket
Drive Unit
Dual-Lens Network Camera
Duct & Tube Cutter
Duffle Bag
Dust Extraction Systems
E-Box
Ear Muff
Earplug
Easel Pads
ECWCS Underwear Bottom
Edge Sensor
Elbow Pad
Electric Lock
Electric Strike
Electrical Connectors
Electrical Insulation & Foams
Electrical Resins
Electrical Tapes
Electrical Testers
Electronics Films & Tapes
EMI Absorbers
EMT Pant
Enclosure
Encoder
End Cap
Enhanced Workwear
Ethernet
Ethernet Switch
EV Fire Blanket
Excursion Organizer
Exit Button
Exit Device
Expandable Barricade
Expansion Board
Extension Arm
Eye Protection
Eyeball Camera
Faceplate
Faceshields
Fasteners
Fastening Tools
Fatigue Shirt
Fence Gate
Fence Post
Fiber Optic Cables
Fiber Scope
FiberMASTER
Field Jacket
Field Watch
Filament Tapes
Files & Rasps
Fillers
Film Installation Tools
Filter
Fingerprint Controller
Finishing Glazes
Fire Access Box
Fire Alarm Cable
fire extinguisher
Fire Extinguisher Recharge
Fire Protection
Fireproof Safe
First Aid Kit
Fish & Glow Rods
Fish Tape Rodder
Fish Tapes
Fisheye Camera
Fisheye Dome Camera
Fittings
Fittings & Valves
Fixed Eyeball Network Camera
Flag
Flags Tabs & Page Markers
Flanges
Flashing Light
Flashlight
Flashlights
Fleece Jacket
Fleece Vest
Fleet Maintenance
Flexible Adhesives
Flight Jacket
Flood Light
Floor Pads
Flooring Knee Pads
Foam Tapes
Foil Tapes
Fold-Up Drivers
Folding Camp Stool
Folding Camp Stove
Frame
Frame Assembly
Frock Liner
Fume Absorber
Fur Hat
Fuse Holders
Fuses
Garage Door Opener
Garmin GPSMAP 67 Handheld GPS - 010-02813-00
Gas Mask
Gas Mask Filter
Gasket
Gate Lock
Gate Operator
Gate Stop
Gauge
Gear
Gear and Sprocket Kit
Gear Reducer
General Handling Glove
Ghillie Suit
Gloves
Glow Rod
Graphic Films
Greases and Lubrication
Grip Performance
Gun Oil
Hacksaws & Blades
Halotron I Fire Extinguisher
Halotron Kit
Halotron l Fire Extinguisher
Hand Saws
Hand Tools
Handcuff
Handheld Abrasives
Handled Brushes Pads & Refills
Hang Tag
Hard Case
Hard Drive
Hard Drive Enclosures
Hard Hat
Hard Hat Mount
Hard Hats
Hardware
Hardware Kit
Harness
Hazard Protection
Head & Face Protection
Head Light
Head Net
Headlamps
Hearing Protection
Heat Gun Parts
Heat Shrink
Heat Shrink Tubing and Sleeves
Heater
Helmet Rail
Hemostats & Probes
Hex Nipples - Stainless Steel
High Performance
Hinge
Hinges
Hoist
Holders & Back-up Pads
Hole Cutter
Hole Saws
Holemaking
Holster
Holster Clip
Holster Kit
Hooded Sweatshirt
Hoodie
Hook
Hook Wrenches
Hook-up Wire
Hooks
Horn Assembly
Hose
Hose Assembly Kit
hot sale
Household
Housing
Hub
Hydration Pack
IC Chip
ID Printer
IDC Taps & Splices
Identification Holder
Ignition Gauge
Impact Sets
Impact Sockets
Impact Wrenches and Accessories
Indexable Cutting Tools
Indicators
Industrial Wipes
Inflatable Pillow
Inspection Camera
Inspection Mirror
Installation Kit
Insulated Jacket
Insulated Pant
Integrated Circuits (IC)
Intercom
Intercom System
Interface Board
Internal Extractors
IP Intercom with 4G Access Points
IP Video System
Isolator Kit
Jab Saw
Jacket
Janitorial & Facility Maintenance
Jaw Clip Mount
Job Shirt
Jobsite Accessories
Joint
Junction Box
Jungle Boot
Key
Key Extractor
Key FOB
Key Switch
Key Tag
Keyboard & Mice
Keypad
Keypad with Card Reader
Knives
Knob
L - Keys
L-Keys
Laminate Film
Laminator
LAN Cable
Language Pack
Lantern
Lanyard
Latch
Launch Cable
Learning & Educational
LED Arm
LED Flashlight
LED Light
LED Light Strip
LED Strips & LED Lamps
Leg Gaiters
Leg Holster
Leg Utility Rig
Lens Cover
Levels
Light
Light Socket
Light Source
Lighting & Electrical
Limit Assembly
Limit Shaft Assembly
Limit Switch
Line Ring
Liquid & Stain Repellents
Lite Cellular Intercom
Lock
Lock & Keys
Lock Box
Locking Pliers
Logic Board
Long Sleeve Shirt
Loop
Loop Detector
Lubricants
Lugs & Wire Nuts
Lunch Cooler
Magnet
Magnet Support
Magnetic Cable Holder
Magnetic Lock
Magnetic Mount
Magnetic Sheets
Magnetic Snao-Lock Mount
Magnetic Strap
Mallets
Mandrels & Adapters
Manual Release
Marking & Labeling
Mask Microphone
Masking & Paper Tapes
Masking Films
Material Handling & Storage
Measuring & Inspecting
Mechanical Finger
Mechanics
MegaPress
MegaPress XL
MegaPressG
Membrane Switch Spacers
Memory Card
Mess Kit
Metal Detector
Military Light
Milling
Miscellaneous Tools
Mock Turtleneck
Models and Model Kits
Modem
Module
Module Kit
Monitor
Mono Ribbon
Monocular
Mortise Lock
Motherboard
Motion Control & Fluid Power
Motion Sensor
MOTOCROSS
Motor
Motor Assembly
Mounting Arm
Mounting Bolt
Mounting Bracket
Mounting Kit
Mounting Pad
Mounting Plate
Mullion Reader
Multi-Bit Screwdrivers
Multi-Way Jacket
Multimeters
Mustang Boots
Needle Nose Pliers
Net
Network Camera
Network Module
Network Video Recorder
Nippers
Nitrile Gloves
Nose Plier
Nozzle
Nozzles & Accessories
Nut
Nut Drivers
O-Ring
Office Tapes
Office Tools & Equipment
Offset Screwdrivers
Open Ended Wrenches
Operator Cover
Optical Light Source
Optical Reflectometer
OTG Goggle
Outdoor Blank-out LED Backlit Sign
Overhead Mount Gate Operator
Packaging Tapes
Packing & Shipping Supplies
Pad Mount
Paddle
Panel
Pant
Pants
Paracord
Park Sentry
Parka
Parka Jacket
Particulate Filter
Parts & Accessories
Patch Book
Patch Cable
Patch Panel
Patches
Pavement Markings & Accessories
PC Power Supplies
Pedestal
PEPPER SPRAY
Photo Cell
Photo Eye Kit
Pin
PIN PUNCH
Pinstriping Tapes
Pipe & Strut Clamps
Pipe & Tube Benders
Pipe Fittings
Pipe Wrenches
Pistol Lanyard
Plate
Platform
Play Set
Plier
Plier Sets
Pliers
Plug
Plug-in Ladder Hoist
Plumbing
Pocket Knives & Folding Knives
Pole Assembly
Pole Mount
Polo Shirt
Polyester Tapes
Polyethylene Tapes
Portable Camp Toilet
Post
Post-It
Pots Trimmers Knobs & Dials
Pouch
Power Adapter
Power Board
Power Control Unit
Power Cord
Power Meter
Power Sanders
Power Supply
Power Tool Parts & Accessories
Power Tools
Powered & Supplied Air Respirators
Precision Cutters
Precision Nut Drivers
Precision Screwdrivers
Preformed Saw Cut Loop
Presence Sensor
Press Fittings
Pressure Plate
Primers & Undercoats
Printer Supply
Programming Device
Programming Kit
Programming Software
PROMO $150 OR MORE
PROMO $75 OR MORE
ProPress
Protective Coatings
Protective Equipment & Safety Gear
Protective Hat
Protective Hood for Intercom
Protective Mask
Protective Suit
Protective Workwear
Proximity Card
Proximity Card Reader
Proximity Reader
Proximity Reader with Keypad
Pry Bar
PTRZ Camera
PTZ Camera
Pullers
Pulley
Pump Lobe
Pumps & Filtration
Punch
Punchdown Tool
Punchdown Tools
Punches
Purple K Direct Pressure Wheels
Purple K Dry Chemical High Flow Fire Extinguisher
Purple-K Fire Extinguisher
Push Button
Push Button Door Control
Pushbutton Switches
PVC Card
Rack
Rack Sentry
Rail Kit
Rail Mounted Light
Rain Jacket
Rain Pants
Rain Suit
Rain Trousers
Raincoat
Rainsuit
Ratcheting Wrenches
Ratchets & Handles
Ratchets and Handles
Receiver
Receptacle
Recharge
Reclosable Fasteners
Reference Point Locator
Reflective Sheeting
Regulator
Relay
relays
Release Assembly
Remote
Remote Camera
Remote Control
Repair & Restoration Kits
Repair Adhesives & Patches
Replacement Blade
Replacement Blades
Replacement Bubble
Replacement Kit
Replacement Parts
Reset Switch
Resin Joints & Splice Kits
Resistor
Resistors
Respirator
Respirator Cartridge
Respirator Fit Testing
Restraints
Retract Tube
Retransfer Film
Reusable Respirators
Reversible Poncho
Reversible Vest
RF Wireless Range
RFID
RFID Reader
RFID Tag
Rim Exit Device
Ring Plier
Ring Pliers
Ripstop Shorts
Rocker Switches
Rodder
Roll Pin
Roller Cage
Roller Guide
Rope
Saddle
Safe
Safety
Safety Backpack
Safety Ballcap
Safety Boonie Hat
Safety Boots
Safety Cones
Safety Equipment
Safety Glasses
Safety Glasses & Goggles
Safety Jacket
Safety Knit Cap
Safety Light
Safety Pants
Safety Parka
Safety Raincoat
Safety Shirt
Safety Vest
Sanding Discs
Sanding Screens
SATA - eSATA Cables
Saw Blades
Saws
Scissors
Scissors & Shears
Scratch Awl
screw
Screw Driver
Screw Extractor
Screwdriver Sets
Screwdrivers
Scrubbing Pads & Sponges
SCSI - SAS Cables
Sealants
Sealing Tapes
Security Cable
Security Connection
Security Lock
Security Scanner
Sensing Edge
Sensor
Server Accessories
Server Storage Arrays
Shackle Lock
Shaft
Shaft Kit
Shear
Shell Shin Guard
Shield
Shirt
Shoe
Shoes
Shoulder Holster
Shoulder Strap
Shredder
Signal Light
Single Sling Pack
Ski and Rescue Suit
Skirt Kit
Slapper
Sledgehammers
Sleeve Assembly
Slick Surface Tapes
Slide Gate Opener
Slip Joint Pliers
Smart Card Reader
Smoke Detector
Snap Action Switches
Snap Ring Pliers
Sneaker
Snips
SNOW
Socket & Ratchet Sets
Socket Accessories
Socket Adaptors
Socket and Ratchet Sets
Socket Wrenches
Sockets
Sodium Chloride Fire Extinguisher
Soft Case
Soft Shell Gilet
Soft Shell Vest
Softshell Jacket
Software
Solar & Wind
Solar Charger
Solar LED Sign
Solar Panel
Solar Panel Kit
Soldering Accessories
Spacer
Speaker
Speaker Cable
Speaker Wire
Specialty Abrasives
Specialty Application Tapes
Specialty Hammers
Specialty Pliers
Specialty Testers
Specialty Wrenches
Spill Control
Splicing & Tabbing Tapes
Spot Light
Spray Equipment
Spring
Sprocket
SSD - HDD Accessories
Stain Steel
Stainless Steel Tube Fittings
Stand
Standard Bits
Standard Pliers
Standard Screwdrivers
Steel Kit
Step Bits
Stick
Stitcher
Storage & Organization
Storage Box
Strap
Strap Mount
Strap Wrenches
STREET
Structural Adhesives
Sunglasses
Surface Protection Materials
Surface Protective Tapes
Surge Protector
Surgical Kit
Surveillance Camera
Suspenders
Suspension
Sweater
Sweatshirt
Swing Door Fitting
Swing Gate Opener
Switch
Switches
T-Handle Drivers
T-Shirt
Tactical Backpack
Tactical Bag
Tactical BDU Pants
Tactical Helmet
Tactical Map Case
Tactical Optical
Tactical Pants
Tactical Pen
Tactical Sling
Tactical Vest
Tag
Tape Adhesive & Fasteners
Tape Applicators Dispensers & Kits
Tape Measures
Tape Roll
Tapes & Adhesives
Taps & Dies
Telephone Butt Set
Telescoping Pole
Terminal Block
Terminal Blocks & Strips
Terminal Strip
Test Equipment Accessories
Tester
Thermal Print Head
Thermal Stripper
Thread Sealant Tapes
Threading
Toggle Switches
Tongue & Groove Pliers
Tool Bags
Tool Bags & Belts
Tool Belts
Tool Cases
Tool Holding
Tool Kit
Tool Sets
Tool Storage
Torque Accessories
Torque Screwdriver
Torque Screwdrivers
Torque Wrenches
Torsion Spring
Track
Traffic Light
Training Bag
Transceiver
Transformer
Transistors & Modules
Transmitter
Transport Pack
Travel Vest
Trim Kit
Trolley Kit
Trolley Rail
Trousers
Tube
Tube Group
Tubular Lock
Turning & Boring
Tweezers
Two-Way Radio
Uncategorized
Underwear Top
Upgrade Kit
Utility Light
Valve
Valve Assembly
Valves
Vehicle Detector
Veil
Velcro Clip Mount
Vest
Video Doorbell
Video Intercom
Vinyl Tapes
Voice - Data - Video Testers
Voice Cellular Intercom
Wall Box Cutter
Wall Clip
Wall Mount Mailbox
Wall Plate
Wall Station
Wallet
Warning Light
Warning Sign
Waste Bag
Water Mist Fire Extinguisher
Water Purification Powder
Welding & Soldering
Welding Protection
Wet Chemical Fire Extinguisher
Wheel
Window Intercom System
Windshield Adhesives
Windshield Tag
Wing & Flag Screwdrivers
Winter Jacket
Winter Vest
Wire
Wire and Cable Pulling Lubricant
Wire Connectors & Terminals
Wire Cutters
Wire Harness
Wire Labels & Markers
Wire Pulling Grips
Wire stripper
Wire Strippers
Wire Wrap Tool
Wired Accessories
Wireless Access Kit
Wireless PA
Wireless Transmitter
Wireless Voice Door Bell
Wiring Kit
Wool Blanket
Work Jacket
Work Light
Work Pants
Workholding & Positioning
Workwear
Wrecking & Pry Bars
Wrench
Wrench Plier
Wrench Sets
Wrenches
Y-Strainers
Zipper Fly BDU Pants
