TP-800-4 Features: 1. User-friendly sensor, with three-stage beeping mode. All-round protection for various surroundings. 2. Can be color coded 3..3-stage beeping mode indicating different distance 4.2-4sensor 5. voice reminder(optional) Technical Data: Voltage: 12V Working Voltage Range: 10.5V ~ 16V DC Current: 50mA ~ 180 am Range of Detection: 0.2 ~ 1.5 m Temperature for CPC: -40 ~ +80oC Temperature for Display: -30 ~ +70oC