Specifications:

• Certification: NONE
• Doorbell Type: wireless
• Origin: CN(Origin)
• Type: Magnetic Sensor Alarm
• Type: Doorbells
• Transmitting Frequency: 433MHz
• Power Source: Battery
• Operating Voltage: 1.5V
• Model Number: Magnetic Anti-theft Alarm System
• Material: ABS Plastic
• Brand Name: WALFRONT
• Battery Life: About 2~3 Year If it is opening and closing 5 times per day
• Battery: 1 * AAA Battery(Not included)