Relay Drivers / A21REL-12
A21REL-12
 
A21REL-12 4-Channel Relay Driver
 
Warranty Lengths - show details
-SW -SW Standard 1yr Warranty
At the time of purchase, the A21REL-12 includes a standard warranty of 12 months. See our full warranty policy in the A21REL-12 manual for the terms and conditions of this warranty.
-XW -XW 4yr Warr Extension
Our Extended Warranty adds 48 months to the standard 12 month warranty, bringing the total warranty period to 60 months. The extended warranty may be purchased only at the time of original product purchase. It may NOT be "added later." Except for the increased coverage length, the same terms and conditions apply to the extended warranty as apply to the standard warranty.

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Product Details
Typically Ships Within 14 - 21 Days
Restockable Yes
Warranty 1 year
Compliance

The "Typically Ships Within" value is an estimate of the number of calendar days within which this product is ready to ship from Campbell Scientific. Orders with more than 10 built-to-order products will likely increase the time needed to prepare the order for shipping.

To estimate how long it will take to receive an order that contains multiple products, combine the longest Ships Within value with the transit time of the shipping method you select.

Some specialized products have long Ships Within values. Because of this, you might consider submitting a separate order for these products so your other products won't be delayed.


Common Accessories

 
CABLE3CBL-L 3-Conductor 22AWG Cable w/Drain
 
One CABLE3CBL-L can control one relay; two can control four relays. This 22 AWG, three-conductor cable has a Santoprene jacket and an aluminum Mylar shield. A 2-foot length should be sufficient if the datalogger and A21REL-12 will be housed in the same enclosure.
CABLE3CBL-L Options - show details
-L ft per cable

Allowed values: 1-1000 ft, increments of 1 ft

Cable Termination Options - show details
-PT -PT w/Tinned Wires
With the -PT option, the cable terminates in pigtails that connect directly to the datalogger.
-PW -PW w/Pre-Wire Connector
Choose this option if you are using this cable with a pre-wired enclosure.
CABLE4CBL-L
 
CABLE4CBL-L 4-Conductor 22AWG Cable w/Drain
 
One CABLE4CBL-L can control two relays. This 22 AWG, four-conductor cable has a Santoprene jacket and an aluminum Mylar shield. A 2-foot length should be sufficient if the datalogger and A21REL-12 will be housed in the same enclosure.
CABLE4CBL-L Options - show details
-L ft per cable

Allowed values: 1-1000 ft, increments of 1 ft

Cable Termination Options - show details
-PT -PT w/Tinned Wires
With the -PT option, the cable terminates in pigtails that connect directly to the datalogger.
-PW -PW w/Pre-Wire Connector
Choose this option if you are using this cable with a pre-wired enclosure.
CABLE5CBL-L
 
CABLE5CBL-L 5-Conductor 22AWG Cable w/Drain
 
One CABLE5CBL-L can control three relays. This 22 AWG, five-conductor cable has a Santoprene jacket and an aluminum Mylar shield. A 2-foot length should be sufficient if the datalogger and A21REL-12 will be housed in the same enclosure.
CABLE5CBL-L Options - show details
-L ft per cable

Allowed values: 1-1000 ft, increments of 1 ft

Cable Termination Options - show details
-PT -PT w/Tinned Wires
With the -PT option, the cable terminates in pigtails that connect directly to the datalogger.
-PW -PW w/Pre-Wire Connector
Choose this option if you are using this cable with a pre-wired enclosure.