LOTE Sistema de Alarma para Seguridad Antirrobo Hogar Tuya Smart House App Control 433MHz
1,The alarm hosts for all PG-103 in this link are all WIFI+GSM ( 2G ) GPRS versons. 433MHz wireless connection, support external wireless siren. Wireless Frequency: 433MHz(1572). Built-in alarm Siren: ≥85dB.