The RFnivo®devices enable the internal electronics and the externally connected signal evaluation to be checked. The test runs for about 20 seconds. "TEST" is displayed. The signal output and the yellow LED change for approx. 10 seconds and then switch back again (relay on-off-on or off-on-off). If the test result is negative, the device shows "ERR", the red LED lights up and the relay drops out.
Start the check by pushing the TEST button of the RFnivo®.