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The DSP-20 is a dual channel detector that uses advanced channel scanning technology to provide superior noise tolerance
Strike body depth 1-1/16"
it is the installer’s answer to the problem of sensitivity setting and false alarms
Liftmaster ABTMIR BATTERY RACK
***If replacing Transmitter with GREEN Board manufactured prior to 8/2020
Digi-Code CR-2149 Universal Photo Beam Sensor Kit Reducer The DSP-20 is a dualThe universal beam sensor works with all major brands of garage door openers Chamberlain, Liftmaster, Craftsman, Overhead (1995+), Genie, Challenger, Stanley, Linear, Moore O Matic and Raynor models (built by Chamberlain).
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