The 905U series radio telemetry modules are an ideal, low-cost alternative to cable installations. The 105S range of modules provide communications via RS485. This method of communication where several devices use a common twisted pair wire is ideal for enclosed factory environments where radio paths may be obstructed. Maximum wire length is typically one mile. Because 905U modules have transceivers, modules are able to communicate with each other to control the flow of information.
Transmissions occur when an input signal changes.
They will operate from a DC power supply of 11 to 30 volts, or an AC supply of 15 to 24 volts. The power supply includes a battery charger for backup batteries and a solar regulator for direct connection to solar panels.