Stand-alone GSM telephone dialler with intuitive LCD display for easy use of the device. 4 activation modes by means of external impulses (triggers) + /- and 4 outputs that can be controlled by SMS or keyboard. The dialler has 20 numbers in its memory for use in the event of an alarm, numbers in position 1-10 for sending SMSs and numbers in position 11-20 for calls. Power supply 9-14 V DC, dimensions 165 x 135 x 32 mm. Only compatible with 2G SIM Card