How do I turn the sound on/off?You need to press and hold ‘ENTER’ whilst simultaneously pressing ‘2’ to change this setting. Related Posts How do I turn off the confirmation/entry sound beeps from the siren? How do I turn the sound on/off? Conexis®L1 Beeps How long will the siren sound for when the alarm is triggered? My Conexis® L1 Smart Door Lock is making an unusual sound How do I turn the silent mode on/off?