This battery is used in majority of Intruder alarm panels, including Low pressure relief valve - Can be used in any position. 12V 2.3Ah/2.1Ah. We are only human, and occasionally things do go wrong.
Lucas 12v 2.3Ah (2.1Ah) Scantronic 9448 Alarm Panel Battery - New Replacement -
Scantronic 9448 Alarm Panel Replacement Battery - New - 12V 2.1AH / 2.3AH
Scantronic 9448 Alarm Panel Replacement AGM Battery 12V 2.1AH / 2.3AH
NX 12V 2.1Ah Alarm Panel Battery, Use For Honeywell UC1221, Yucel/Yuasa Y2.1-12 Sealed Lead Acid Battery 12v 2.1ah, 2.3ah Fire Alarm Panel Back Up
NX, 12V Battery, 12v 2.1Ah 2.3Ah battery, 12V 2.3Ah Lead Acid Rechargeable Battery For General purpose, Fire Alarm Panel Battery, For Yucel/Yuasa Y2.1-12, Honeywell UC1221 (12V - 2.1Ah / 2.3Ah)
House Alarm Battery Casil UC1221 12V 2.1AH / 2.3AH Alarm Panel Battery