Economical parking sensor Economical parking sensor Model:p810 Functions: A) sensor number: 2-4 pcs B) detector type:drilling or stick-on C) stage-by-stage sound alarm to avoid colliding D) on backing the car, the rear sensors detect obstacles behind the car auto-matically E) versatile detection range F) sensor type for optional Specifications Working voltage: 9-27v Input: 2.5w(max) Beeper: 90-105db Working tempreture: --40c--+80c Frequency: 40khz Best detection distance: 0.5--1.5m
