Plug Type:US Plug,it applies to Canada, , Japan, Mexico, Thailand, the , the Philippines and so on.unique and elegant styleTransmitter using solar power, power saved and durableRange in open spaces: Max. 200-300m52 style of tunes for optional. One tunes can be matched one than more receiver.Ringtones: 52Colour: BlackMaterial: ABS4 levels adjustable volume including silent modeOne transmitter can be matched with receivers. One receiver can be matched with transmitters as . transmitter or receiver plug into the socket, press volume button for 6 seconds, blue led light keep on, then press transmitter button, when receiver blue led flash, means pair successfully.It will fail paring if you can not finished within 6 secondsAttention: One transmitter can be matched with receivers. One receiver can be matched with transmitters as ., and with memory function once off power.Transmitter:Solar cellWorking reference :5.5V 25mA 0.13WNo string of codeWorking current:12mA0.5 second for reaction when pressing the button with light reminderWorking range: about 200-300m (on open air)Receiver:Working voltage: 90-260VStandby current: 10mAWorking current: 60mAWorking Frequency: 433MHZwith the function of night light, Brighting at night or darkPackage Contents:1* Indoor Unit(Receiver)1* Outdoor Unit(Transmitter)1* Mounting Base1* Bag of Screws1* TapeOnly the above package content, other are not included.Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.