Function Features: LP012 LED dispaly parking sensor Function Features: . Self-test function activated when reversing . 4 Sensors for full rear coverage . All weather design (-40oc~+80oc), un-affected by wind, ice, snow & rain . Chirping warning & LED digital display . Display in green, orange & red . Left/right obstacle display . Sensor color optional . Anti-fault alarming . Original PHILIPS Chip, quality guarantee Technical Data: . Working voltage: DC12V±2V . Max . Power ;< 5W . Working temperature: -40oc~+80oc . Display distance:≤2.5m . Alarming distance:≤1.5m . Alarming volume: 75~80dB