Support: Tuya Smart ; Detection: Flammable gases, Natural gas (methane), LPG (propane-butane) gas ; Gas concentration to trigger alarm: 6% ±3% Lower Explosive Limit (LEL) ; Frequency band: 2.4 GHz WiFi IEEE 802.11 b/g/n ; Mobile phones support: It is possible to operate via the Wi-Fi network from the mobile application on the iOS, Android systems ;