Screw Terminals: Doorbell transformers often have two screw terminals. One of these terminals connects (via wire) to the doorbell chime and the other connects to the doorbell push button. Ground, Neutral & Hot Wires: These three wires connect the doorbell transformer to your home's electrical system. Typically, the ground wire will be green, the neutral wire. Screw the transformer's wires onto the doorbell's transformer terminal-screw with a flat-head screwdriver. This terminal will have a 'C' label when the doorbell uses two or three wire terminals. Anno 2070 genius. If the doorbell uses six wire terminals, then connect the transformer's white wire to the 'L1' terminal and the transformer's red wire. I have a Friedland doorbell which I want to move. It has 4 terminals (numbered 0 - 3) bellpush connected to nos 0 & 1. Dell 926 all in one inkjet printer driver download. A 2 core wire leaves the transformer disappears into the wall and TWO 2 core wires arrive at the bell!
This was the process I performed for setting up a Ring Doorbell Pro in conjunction with my existing Friedland 214 doorbell.
The Ring Pro is designed for the US market where their doorbells operate at higher AC voltages. In the UK the standard household operates with lower AC voltages (around 8V AC) and so the Ring Pro in the UK comes with a power converter kit. You get a transformer and a solenoid bypass kit (which is effectively a 50W resistor).
My house was installed with a Friedland 752 transformer and and Friedland 214 door chime. I had both a front door and a back door push button wired up.
The first thing I had to do was figure out the wiring. I isolated the transformer, took the cover off the door chime and compared the wiring to an old diagram I found on the Internet. Note that inside the door chime there is a label and an arrow pointing 'Top'. Use this to align the chime correctly (mine was installed upside down with Top pointing downwards!). The diagram isn't very clear, but there are actually 3 wires connected to terminal 0 (one half of the AC transformer source and then one connection out to each of the two buttons).
By disconnecting the wires in turn and using a multimeter I found that the front door bell made the connection between terminal 2 and one of the wires screwed into terminal 0.
| Terminal | Description |
|---|---|
| 0 | Multiple wires: A. Common transformer connection, B. To Front push button, C. To Back push button |
| 1 | Return from Back push button |
| 2 | Return from Front push button |
| 3 | Transformer connection |
Thus the wires screwed into terminals 2 and 3 were disconnected and pushed into the bypass unit. This puts the resistor in series with the Ring Pro, across the AC output.
The Ring Pro is designed for the US market where their doorbells operate at higher AC voltages. In the UK the standard household operates with lower AC voltages (around 8V AC) and so the Ring Pro in the UK comes with a power converter kit. You get a transformer and a solenoid bypass kit (which is effectively a 50W resistor).
My house was installed with a Friedland 752 transformer and and Friedland 214 door chime. I had both a front door and a back door push button wired up.
The first thing I had to do was figure out the wiring. I isolated the transformer, took the cover off the door chime and compared the wiring to an old diagram I found on the Internet. Note that inside the door chime there is a label and an arrow pointing 'Top'. Use this to align the chime correctly (mine was installed upside down with Top pointing downwards!). The diagram isn't very clear, but there are actually 3 wires connected to terminal 0 (one half of the AC transformer source and then one connection out to each of the two buttons).
By disconnecting the wires in turn and using a multimeter I found that the front door bell made the connection between terminal 2 and one of the wires screwed into terminal 0.
| Terminal | Description |
|---|---|
| 0 | Multiple wires: A. Common transformer connection, B. To Front push button, C. To Back push button |
| 1 | Return from Back push button |
| 2 | Return from Front push button |
| 3 | Transformer connection |
Thus the wires screwed into terminals 2 and 3 were disconnected and pushed into the bypass unit. This puts the resistor in series with the Ring Pro, across the AC output.
Friedland Doorbell Wiring 0 1 2 3v
To house the transformer I purchased a Wylex ESE2 IP40 2-Module Unpopulated DIN Enclosure from Screwfix (it cost less than £5).
Friedland Doorbell Wiring 0 1 2 3/4
I removed the old Friedland transformer and installed the new Ring transformer inside the Wylex enclosure. I wired up the mains connection and the 24V output.