telltask is a GSM/UMTS remote control for wall mounting that allows an electrical device to be controlled. To that end, you connect the device to a power socket and the device you wish to control, and then equip it with a SIM card so you can contact it at its own phone number via smartphone. An integrated sensor monitors the room temperature, which can be determined via text message. You can program two temperature thresholds. Up to 6 users are notified via text message in the event of an alarm. Thanks to its power supply with 5.5 and 24 V, the device can also be used in a boat or caravan, for example. The device comes with a 3G antenna, plug-in power supply, USB cable and multilingual software.