55 Ringtones and 5 Level Volume
55 Ringtones ,the default ringtone is “Ding-Dong”
5 Level Adjustable Volume From 0db to 110db
Working voltage of Receiver:110-260V
How to change the ringtone
Step 1:Press the " forward " / " backward " button on the receiver to choose your favorite melody.
Step 2:Press and hold down the volume button ,until it makes a "Ding" sound and the receiver indicator flashes.
Step 3:Press the call button quickly,it will makes a "Ding-Ding" sound and the receiver indicator flashes.
Step 4:Press the call button again to confirm whether the current ringtone is the one you have set,if yes,the pairing is completed.