Question:
My 1AC II does not beep in the presence of live Voltage
Answer:
1AC II has two start-up modes one of which is titled in the user guide as “disable the audio beeper”.
Please try using a short press of the power button to turn the unit on as shown in the below section of the manual:
To confirm that the beeper is working – the 1AC II should always give a longer beep when it is turned off, irrespective of the mode it was started in.