Toa WM-D5200 Mode D'emploi page 13

[switching the encryption function from on to oFF]
step 1. With the battery compartment cover removed, switch ON the
microphone power switch and confirm that the Encryption indicator
is lit.
step 2. Switch OFF the power switch.
step 3. Switch ON the microphone power switch while holding down the
Encryption setting switch.
note
Do not switch OFF the microphone power switch during setting.
step 4. Confirm that the Encryption indicator has extinguished, then release
the Encryption setting switch.
The encryption setting switches to OFF.
Lit
Unlit
13