RK410PR Dual Sensor Motion Detector With RA92. It Is another one in ROISCOK Products Line Which is Designed Special for Residential Installation. It has the features as Strong Ability to Catch Signal, Low False & lost Alarm Rate, Low Power Consumption and True Temperature Compensation. Smart Manufacture and Elegant Appearance. Stable Performance and Long Usage Life. Proper to both Wall and Ceiling Mounting. Easy to Design and Install by being equipped With RA92 Swivel Bracket. Main Features Coverage is 12M Dual Passive Infrared Detective Technology Microprocessor Design Improves False Alarm Immunity True Temperature Compensation Dual Polarity Pulse Count is Adjustable Resist Interference of white Light Power Consumption is Low High RFI Immunity for False Alarm Prevention (25V/M to 1GHz) Professional Optical Pigmented Lenses Installed on Wall, Ceiling or Corner Mounting RA92 swivel brackets is Available Convenient for Installation Pulse Count is Selectable Resist Fluorescent Interference Memory and Form-C Relay Smart and Elegant Design is Ideal Selection for Residential Installations Specification Working Voltage: 9-16VDC Working Current: 12mA Contact of Alarm: NC, 12VDC, 100mA max Contact of Tamper: NC, 12VDC, 100mA max Time to Alarm: 2.2s Time to Warm-up: 2 minutes RFI characteristic: 25V/m, 10Mhz ~ 1Ghz Working Temperature: 0? ~ 55? Storage Temperature -20? ~ 60? Size: 107?8?9mm Height of Installation: 2.3-2.5M