Audio and alarm interface available. L30: Ø26 mm × 50 mm (Ø1.0 × 2.0\")". Image Sensor 1/3" Progressive Scan CMOS. Reset Key Yes. Alarm 1 input, 1 output (max. 12 VDC, 30 mA). Basic Event Motion detection, video tampering alarm, exception (HDD full, HDD error, network disconncected), video quality diagnosis.
eBay