The hand-held transmitter SHT-12 Mini allows to remote control up to 2 functions of a radio module or receiver of the radio series SH-12. With its compact design it fits in every pocket and is also suitable as a key ring.A blue LED indicates transmission mode. It not only displays transmitted radio signals, but also provides information about the quality of radio communication and the transmitter supply voltage. Confirmation of the receiver is also indicated acoustically by an integrated beeper. If confirmation is deactivated, every change of the key status is reported instead.The hand-held transmitter of the SH-12 radio series works extremely low in interference because of its special transmission characteristics. The interference-resistant radio transmission and extremely short reaction times allow a range of over 250m to be achieved. For strong narrow-band interference or the use of several parallel radio systems the working frequency can be set for individual requirements. The SH-1