Amazon
Dual Power DC6-12V/Solar (Sold separately) 5000mAh back-up battery Weatherproof, Tamper-proof Adjustable siren, max 120dB Works with the Hubs and Wired sensors converter
Dual Power DC6-12V/Solar (Sold separately) 5000mAh back-up battery Weatherproof, Tamper-proof Adjustable siren, max 120dB Works with the Hubs and Wired sensors converter