This feedback is essential when controlling equipment that have toggle controls. Unless you know whether the device is currently on or off, a macro sequence could accidentally turn a device off when it should be on and vice-versa. The 4 probes set addresses P13, P14, P15, P16. Send TV IR on signal only if the probe senses it is off. This prevents inadvertently turning a device off within a macro sequence when it is already on.
Additional BOBs can be daisy chained if more probes are required.
Attach up to 4 probes in any combination to it. It provides 4 digital output signals that can be attached directly to X10 Powerflash Interfaces to send an X10 signal, or the digital inputs of many home automation controllers including the JDS TimeCommander Plus and HomeVision. Two models are available.