Freezer Temperature and Humidity Data Logger

T20 server room gsm sms temperature alarm system Skype: lisali1220 WhatsApp: 0086 13652426178 E-mail: lisa (at) mobq2000.com QQ: 2946370755 It has been designed as a cost effective, low power, self contained data logger. It has 2 temperature sensor inputs with embedded GSM/GPRS module to provide an all in one instrument for data logging, remote data acquisition, alarm and control. It uploads real time data on schedule or a GPRS temperature/humidity data logger larm or pre