*100% wireless configuration,installation by DIY;
*1,000,000 inlet RF pin sets maintains high reliability;
*Simple accessory expansion by automatic recoding;
*Can work with 99 wireless calling remote controls or 10 wireless alarm remote controls;
*Digital voice message record, auto play after receive calling;
*Built-in digit clock;
*Display the latest 10 calling numbers, calling times or alarming zones[...]