Features 1、The remote control is very useful as a central function. Users can easily integrate KL1-GSM-T into their own systems to perform remote control over GSM networks. 2、 It can be operated anywhere without distance limitation. 3、GSM quad band module 850/900/1800/1900 Mhz. 4、Powerful power supply 7-36VDC can support improve the working efficient. 5、It can support up to 10 authorized numbers that are free to call/turn off devices. 6、1 output relay  (10A/30VDC, 10A/250VAC). 7、1 ambient sensor input for monitoring on-site temperature. 8、6 groups automatic temperature control can be set by SMS. 9、 It is compatible wall installation and DIN35mm/1.3in industrial rail installation. 10、Industrial design is suitable for long - term working applications. 11、 KL1-GSM-T is a GSM product that supports output of 10A and can be equipped with 1 temperature detection and 6 groups automatic temperature control.  Specification Condition: 100% Brand New Item Type: Temperature Control Sensor Color: As the Picture Shows DC Power Supply: Standard Adapter DC12V / 500mA, Range: 7-36VDC (Not Included) Power Consumption: Standby 12 V / 50mA, Maximum Working 12 V / 200mA GSM Frequency: 850/900/1800 / 1900 Mhz SIM Interface: Compatible with 3V Micro SIM Card External Antenna: SMA Antenna Interface, 50Ohm, 3dB Gain Temperature Interface: 1 NTC Temperature Port Temperature Detection Range: -40- 11°C Relay Output: 1 Channel, 10A / 30VDC, 10A / 250VAC Output Logic: Normally on and Normally off Size: Approx. 118 x 92 x 42mm/4.6 x 3.6 x 1.6in (Lx W xH) Package List 1 x GSM Temperature Control Sensor 1 x Antenna 1 x 0.5m/1.6ft Temperature Sensor 1 x Instruction Manual