The Byron Sentry BY202F 100m plug-in chime kit with 6 sounds & flashing light is ideal for most homes. The chime unit plugs into the mains so you will never have to change the batteries in it whilst the optional flashing light means you know when someones at the door even if you can't hear it. This kit has a 1year guarantee as well as a memory function so that once installed it will never have to be re-learnt even if the batteries are replaced. Chime unit supports upto 6 pushes.
The Byron BY202 is a portable 100m chime with a choice of 6 melodies. Over a million self learning codes. Will keep the code even when the chime unit is unplugged and then replugged in. It can have upto 6 bell pushes controlling the chime. 80-85dB rating depending on the sound.
Push requires 1 x CR2032 battery (included).
The BYRBY202F Version also has a flashing light alert for the hard of hearing.