Best Smart Wireless Doorbell For Dogs (2 Receivers+2 transmitters)

About The Product: 

• Multi-function; training the dog how to ring the bell, protect your door from vandalism,can also used as an emergency help signal bell.
• 328 yards (300 m) distance transmission stably and efficiently signal range up to 328 yards (300 m) in the open air.
• 2 Receivers & 2 Transmitters,offer more range to option.
• Receiver Unit has 55 Ringtones for Your Choice.
• 5 Levels Adjustable Volume From 0 db to 110 db.
• Easy to use (plug and play), It’s great for large house including villas, apartment, office,warehouse…etc

Specifications:

Charging Type: Plug-in Charging

Voltage: 110-220 (V)

Power: 0.035-0.2(W)

Working Temperature: -30°C to +70°C

Transmitter waterproof grade: IP55

Material: Plastic

Size: 

• 3.1″ x 3.1″ x 2″ (8 x 8 x 5 cm) (Receiver)
• 2.3″ x 2.3″ x 0.6″  (6 x 6 x 1.5 cm) (Transmitters)