"Operating voltage: AC110V or 220V Gas species: Natural gas or LPG Sensor: Semiconductor Wireless frequency: 315Mhz or 433Mhz Chip: 2262/1572 Drivable accessaries: Solenoid valve Alarm output: Sound & LED flash alarm&RF signal > adopted SCM from USA to ensure the stability, > intelligent circuit design, break-through anti-oil technology; "