Ecowitt WH57 Wireless Lightning Detection Sensor with Solar Radiation Shield, Detects Lightning Bolts and Storms within 25 Miles

Battery Included：No High-concerned chemical：None Theory：Frequency Display Type：DIGITAL Certification：CE,FCC Model Number：WH57 Origin：Mainland China Max Measuring Temperature：49°C & Under Style：Standing and Wall Hanging Brand Name：ECOWITT Is Smart Device：Yes Use：Outdoor Sensor Size：123x42x14mm Frequency：North America:915MHz; Europe: 868MHz; Other areas: 433MHz Power：2x1.5V AA batteries(not included) Wireless transmitting range：100M(300feet) Lightning detection range：0-25 miles/0-40 km Sensor reporting interval：79 seconds Working temperature：-40~50°C(-40~122°F)

Battery Included: No High-concerned chemical: None Theory: Frequency Display Type: DIGITAL Certification: CE,FCC Model Number: WH57 Origin: Mainland China Max Measuring Temperature: 49°C & Under Style: Standing and Wall Hanging Brand Name: ECOWITT Is Smart Device: Yes Use: Outdoor Sensor Size: 123x42x14mm Frequency: North America:915MHz; Europe: 868MHz; Other areas: 433MHz Power: 2x1.5V AA batteries(not included) Wireless transmitting range: 100M(300feet) Lightning detection range: 0-25 miles/0-40 km Sensor reporting interval: 79 seconds Working temperature: -40~50°C(-40~122°F)