™
CH Byron, Byron House, Sherwood Rd
Astonfields, Bromsgrove, B60 3DR, UK
support@chbyron.com
9-5 Mon-Fri, Local call charges apply
Tel: 0845 2301231 (UK) www.chbyron.com
Traditional Wired Door Chime
Drill Template for Key Hole Mounting Slots
Installation guide:
Using the template provided, drill two appropriate sized holes to 
accommodate the wall plugs. When tightening the screws leave 
approximately 10mm of the screw proud.
Connector  Block
Terminals
Transformer Operation: Two Wire Installation (standard)
Commonly used when upgrading a previous installations:
1: Connect one of the wires (Bell Push Or Transformer) to terminal 2 of the 
chime connector block.
2: Connect the second wire from the bell push to terminal 3 of the 
chime connector block.
3: Test to make sure that the chime is operating correctly. 
NB:The chime connector block can be adhered to the  chime by 
removing the sticky tab cover from the bottom of the connector block.
Transformer Operation: Four Wire Installation
Commonly used in new installations:
1: Connect one of the wires from the Bell Push to terminal 3 of the chime connector 
block and the second wire to terminal 4 of the chime connector block.
1: Connect one of the wires from the Transformer to terminal 2 of the 
chime connector blockand the second wire to terminal 4 of the chime 
connector block.
3: Test to make sure that the chime is operating correctly. 
NB: The chime connector block can be adhered to the chime by 
removing the sticky tab cover from the bottom of the connector block.
Battery Layout
Wire to Bell Push &
Transformer
Battery Operation: 
1: insert 4 x Size ‘C’ (LR14) batteries, take care to make sure that the battery 
polarity matches the internal markings.
2: Connect one of the wires from the bell push to terminal 1 of the chimes
connector block.
3: Connect the second wire from the bell push to terminal 4 of the 
chimes connector block.
4: Test to make sure that the chime is operating correctly. 
NB: The chime connector block can be adhered to the chime by 
removing the sticky tab  cover from the bottom of the connector 
block.
Wire to Bell 
Push 
Wire to 
Bell Push 
Wire to 
Transformer 
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