GSM siren alarm Buyer and Importer from China - Buying Lead

GSM siren alarm

GSM siren alarm 1. Blue red light, 20-30w 2. Adopt GS 1900, per-set 5 to send text when alarm alert 3. 120db speaker 4. Built-in rechargeable battery 5. Support 433 A&B 6. When user press A in the remote control. Strobe and siren must activated and send sms to 5 users 7. Work in quad band

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