Smart Home Tuya WiFi + GSM 4G sistema antifurto di sicurezza wireless + Amazon Alexa

4G GSM frequesncy 850/900/1800/1900MHz. Support Wireless Detector Quantity Max 100pcs. Model WIFI + 4G. Two-way audio GSM support. WiFi Standards IEEE 802.11 b/n/g 2.4G Hz. Alarm Call number No. Wireless frequency 433MHz.

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