Blue flash indicator, DIY system, attractive design,decoration and practicality Digital system, anti-interference Fashion chord, 12 music for selection, adjustable music volume 110V to 130V, 220V to 240V AC power supply, operating range up to 100m (no obstacles) Working temperature: -30 to 60 degree Celsius Frequency: 315/433MHz+/-0.5MHz Quiescent current: 70-100mA Working current: 80-110mA Low power consumption: less than 5mW Volume: > = 80dB Plug available: two round pin, two flat pin and 13A or transmitter: Quiescent current: 0mA Working current: less than 10mA Transmitting power: less than 10mW No wiring, no installation Packing: blister, 48 pieces/carton Carton measurements: 55.5 x 34 x 37.5cm Minimum purchase order: 2,000 pieces Reputed supplier with 13 years of experience