Extended Description Our NEW MINI GSM Dialler is a compact SMS text alert module which can send a pre-programmedfixed text message to two recipients when either or both of its two volt-free digital inputs are triggered. Powered by 9-15v DC the MINI GSM is ideal for remote applications where you need to be informed if there is an alarm condition or a problem on a remote site. Configuration and installation is simple just add the two recipients phone numbers to the SIM card and insert in the unit, connect just the minimum of 3 wires and the next time the inputs are triggered the text message 'zone open' is sent, once the trigger inputs are reset the message 'zone closed' is sent. There is also an output that can be remote controlled by calling the unit. Uses pay as you go or contract SIM on Vodaphone, 02, Orange or T-Mobile Features: Compact & Discrete Design Quad band GSM engine Two digital Inputs One Transistor Output Fixed SMS messages Messages sent on closing and opening Text or "ring" alerts No programming required Two recipients for messages Add recipients number to the SIM card Built-in antenna Output Control by "ring" or text Enable/Disable by text Specification:   Power   - Requires 9-15vDC (300mA Max) supply   GSM GSM850/900/1800/1900   Inputs - 2 digital inputs   - normally open - input voltage 0-30V   - duration >600mS (Z1 & Z2)   Output - Open collector   (500mA, 30v max)   - pulled to COM when enabled.   Standby Current 30mA Max   Operating Temp -35 to +55decC   SIM Card Free with unit   - select network - Vodafone, O2, Orange or T-Mobile   (UK PAYG - No credit)   Antenna On board - (ANT)   - Note: Do not install the unit in a metal enclosure.   Power Supply   Plug-in 230VAC to 12vDC available as option Price £115.99