Features and specifications:

Doorbell model: A20

Color:Black/Gold/Silver

Operating range:300  meters in open area

Volume:4 levels (20-85dB)

Ringtones:36 pcs

Transmitter size:77*46*20mm

Receiver size:90*56*20mm

Battery type: 23A 12V alkaline battery ( battery not included )

The receiver voltage: 110-220V 

Receiver Plug Type:  EU/UK/US plug AU adapter

Waterproof grade: IP44

Applicable temperature: -30°C to 70°C

The doorbell can use in office,home, hospital,factory,restaurant or any where you need it.

300 meter receiving distance (In the open area),Stable quality is ideal for villas, hotels, schools and other areas.

The button cannot be placed on an iron door because it will interfere with the signal.

Just plug the receiver into an electrical outlet,the push button transmitter can be stick it to the door with provided adhesive tapes.

Product list:

Black/Gold/Silver-1x1:                                                                         Black/Gold/Silver-1x2:

1 * Doorbell transmitter                                                                           1 * Doorbell transmitter

1 * Doorbell receiver                                                                                2 * Doorbell receivers

1 * Double sided tape                                                                                1 * Double sided tape

1 * Screw                                                                                                 1 * Screw

                                                   3 Colors

                                                     Black

                                                Gold

                                              Silver