'DING-DONG' DOORCHIME INTERCOM Model No：MDP-909 Features：
* Ensures secuirty and privacy.
* Pleasant-sounding ’Ding-Dong’ tone.
* Weatherproof hands-free Outdoor Annunciator with built-in rain roof.
* Bell push with name plate.
* Power saving by auto OFF timer.
* Flashing light indicates weak battery condit……
'DING-DONG' DOORCHIME INTERCOM Model No：DP-909 Features：
* Ensures secuirty and privacy.
* Pleasant-sounding ’Ding-Dong’ tone.
* Weatherproof hands-free Outdoor Annunciator.
* Power saving by auto OFF timer.
* Flashing light indicates weak battery condition.
* Operated on battery (9V-PP3) or mains adaptor (not included). ……
DELUXE DOORCHIME INTERCOM Model No：MIC-909ND Features：
* Ensures security and privacy.
* "Buzz" audio sound.
* Volume control on indoor station.
* Weatherproof outdoor annunciator provides hands-free communication.
* LED ligths when system is in use.
* Can be used as a 2-station intercom. ……
'DING-DONG' DOORCHIME INTERCOM Model No：MIC-909 Features：
* Ensures secuirty and privacy.
* Pleasant-sounding ’Ding-Dong’ tone.
* Weatherproof hands-free Outdoor Annunciator.
* Power saving by auto OFF timer.
* Flashing light indicates weak battery condition.
* Operated on battery (9V-PP3) or mains adaptor (not included). ……
'DING-DONG' DOORCHIME INTERCOM Model No：MIC-250 Features：
* Unique design.
* Ensures secuirty and privacy.
* Pleasant-sounding ’Ding-Dong’ tone.
* Weatherproof hands-free Outdoor Annunciator.
* Power saving by auto OFF timer.
* Flashing light indicates weak battery condition.
*……
