"Please make sure that your bell transformer provides an output voltage between 8 and 24V and an output power of at least 10W. (The 8V/1A standard will also work as they deliver 9.6W usually.)

Often we only specify the output voltage and the maximum output current such as 12V 1A on the bell transformer. Here, output voltage x max. output current = max. output power applies. 12V x 1A =12W.


Volt

A

W

Suitability of the transformer for Smart Doorbell

8

0,5

4

8V / 0,5A with 4W will not work 

8

1

8

8V / 1A   may still be sufficient - works 90% of the time  

8

1,5

12

8V / 1,5 A und 12W - perfect installation 

8

2

16

8V / 2A und 16W - is slightly over but will work

12

0,5

6

12V / 1A und 6W will not work

12

1

12

12V / 1A sind 12W - perfect installation

12

1,5

18

Smart Doorbell is only classified below 15W

12

2

24

Smart Doorbell is only classified below 15W

24

0,5

12

24V / 0,5A und 12W -perfect installation

24

1

24

Smart Doorbell is only classified below 15W

24

1,5

36

Smart Doorbell is only classified below 15W

24

2

48

Smart Doorbell is only classified below 15W






This value should be 10W.


"Read the output voltage of your transformer, search for it in the picture, go vertically up to blue line. Then go horizontally to the left and read the value for the output current. The value on the transformer must be the same or better."