The M8 transmitter is designed for mounting on a DIN rail, and is the ideal solution for applications requiring wireless transmission for on/off and/or proportional commands coming from sensors or RS485 port. The DIN rail mounted transmitter should be placed inside a control box for clean and trouble free installation, and is supplied complete with an external antenna for the radio communication. In addition to the 21 on/off + 4 proportional commands, Start, Stop and Frequency Change input are available as for traditional radio control commands. The double transmission version can manage the feedback information displaying it on a LCD screen or activating some transmitter built in relays.