Simple Wireless Digital Dual_way Doorphone, one to one or one to many, best seller in many Europe countries Wireless digital transmission of audio signal excludes external interference and promises clear voice. RL-0510C and RL-0510(AC/DC) with wireless code unlocking function to prevent wrong unlocking. RL-0510(AC/DC) system with cpu function: It,s battery-operated when power failure occurs; and it transfers to AC power supplied when power comes. The power supply system of the indoor unit of RL-0510A(AC/DC) is the same as RL-0510(AC/DC). The outdoor unit is battery-operated, suitable to be installed at the outdoor without power. Work distance: 100m~150m (open area). DIY installation without wire installation trouble and expenses. With CE and FCC approval.
it can be run by one main doorphone and with many sub as possible,
the product has achieve a great sells in France and germany,
More models can be chose, pls ask for detail
Wireless Digital Dual_way Doorphone
