Shenzhen Welldone Technology And Industry Co., Ltd.

Wireless Door phone and home intercom system GP-MA600 is the third type wireless door phone of our company which put in markets in 2006. This product

1. No need run cables. Mostly cut down construction cost. 2. Global intercom. No limited with intercom distance. 3. Security and convenient. Not in

Wireless Doorphone GP-MA40 and musical doorbells are second type wireless doorphone of our company which put in markets in 2005. This product has the

The Wireless Lock-controller is matched to use with the Handset of Wireless Door phone GP-MA600, GP-MA40, or GP-MA30 of our company. If you have insta