GSM Text Message Alarm Units

These units can monitor parameters such as temperature and humidity or contact closure inputs and automatically generate a text message alarm when high or low limits are exceeded. Some also have relay outputs that can be activated by text message to control a local siren, pump or cooling fan. They require a standard SIM card from your preferred mobile phone operator and both contract and pay-as-you-go are suitable.

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Page 1 of 1:    4 Items