When the TEST/ARM LED light is solid, the total number of devices that are on, and communicating with the 18R2 are displayed on the upper 7-segment display. All devices, including the 18M, 36M, 72M, and Audio Box report as one device.
When the TEST/ARM LED light is solid, the total number of devices that are on, and communicating with the 18R2 are displayed on the upper 7-segment display. All devices, including the 18M, 36M, 72M, and Audio Box report as one device.