new in Box never been opened The RCR-REX is a dual technology, request-to-exit sensor used for secure door egress and door access control. The RCR-REX combines the power of passive infrared and Doppler range-controlled radar technologies to provide the industry's most secure request-to-exit sensor. The sensor is immune to common attempts to defeat PIRs because both heat and physical motion are simultaneously required to triger the device.
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