2 x Home Fire Alarm Smoke Detector Fireangel Twin Pack with Batteries | eBay
FireAngel Optical Smoke Alarm with 10 Year Sealed For Life Battery, FA6620-R-T2 (ST-622 / ST-620 replacement, new gen) - Twin Pack , White : Amazon.co.uk: DIY & Tools
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FireAngel FA3313-SB1-T2 Optical Smoke Alarm + CO Alarm with 1 Year Replaceable Batteries – Twin Pack | Wickes.co.uk
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FireAngel Optical Smoke Alarm with 10 Year Sealed For Life Battery, FA6620-R-T2 (ST-622 / ST-620 replacement, new gen) - Twin Pack , White : Amazon.co.uk: DIY & Tools