Specifications:

• Origin: CN(Origin)
• Working Voltage: 2.1V~3.5V
• Special Features: Transmission frequency: 433.92MHz
• Model Name: ES331
• Material Type: ABS
• Item Width: 39mm
• Item Weight: 0.21kg
• Item Type: Alarm Systems & Security
• Item Length: 55mm
• Item Height: 12mm
• External Testing Certification: FCC
• Brand Name: Erisin