The RFX-3 receiver monitors the active state of up to three Opal RFX passive infrared detectors. The RFX-3 can be mounted externally or internally with a line of sight reception distance of up to 150 metres to the detector(s). 

Specifications 
Supply 12VDC @ 35mA nominal (9 to 20 VDC maximum) 
Outputs (CCTV) 3 x independent channel outputs (24hr)
Selectable N/O (form A) or N/C (form B)
Individual timers 0.4 to 60 seconds after last detection. Non volatile memory 
Outputs (A) 3 x independent switching -ve outputs (24hr) rated @ 250mA - 0.4 second on detection. 
RF loss 3 x RF signal loss alarm outputs: -ve switching rated @ 250mA 
Lux Output (S) 1 x photocell controlled -ve switching.
Active 60 seconds after last detection 
Tamper Back & front tamper volt free output (form B) 
Indication Independent channel active & low battery outputs / LED’s 
Temperature -20°C + 55°C 
Enclosure IP65 high impact ABS