... display touch keypad 3.door chime function cost-effective Ademco gsm wireless alarm systemFeature:1.G71 (G71-GT/G71-GTW) is ... chime function 9.Can preset 5 groups telephone, 5 groups SMS numbers, with functions of recording, voice indicating and monitoring. ... Controller, Host Keypad , Remote Controlling Keypad, Telephone/Mobile phone and SMS. 12.Dual-network alarm system,support door bell function 13 ...