Please see the guide below to see how you replace a Pyronix DELTABELL-WE Battery
Depending upon which battery type the Deltabell is supplied with – install as per whichever diagram applies to your battery on the right (either the square or round type)
The batteries and battery holder should be inserted as shown:
Batteries for this device:
NOTE: Older Deltabell products were supplied with a single cylindrical battery type (1x BATT-CR34615D) instead of the two square batteries (2x BATT-ES1) in the current product. The different battery types are NOT INTERCHANGEABLE between products. Replace like with like under all circumstances.
Closing the DELTABELL-WE