CONTACT w/o LED - Alarm: 7m A max.; 12 VDC 3 V peak-to-peak at nominal 12 VDC Alarm relay: Form A SPST, 90 m A, 16 VDC, 15 Ohm protective resistor Tamper switch Closed with cover in place 0.5 A, 30 VDC RFI immunity: 30 V/m 10 MHz - 1000 MHz PIR White light immunity: 6,500.