Ring Alarm
Centrally Powering Ring Keypad and Siren
Hi folks, I'm replacing a very old wired alarm system with a Ring 2nd Gen alarm system. The beauty of this is that I have wiring to where I want most of the sensors and the keypad and siren. I plan to place the base station where the original system control unit was (under the stairs) as it has mains power, then get some DIN transformers in a project box to run 12V and 5V as needed to the units. Can you help me understand a few things...  1. Will the HDR-15-12 be suitable to power the Ring Siren? The manual says 12W max but this is 15W. I can't imagine this is going to be detrimental, but interested in people's experiences. 2. Will the HDR-15-5 be suitable to power the Ring 2nd Gen Keypad (spliced into a USB connector)? 3. Is there any way to permanently power the Ring motion sensors from a 5/12V supply? Many thanks for the advice!
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21-06-2021 10:09:52
Responses (3)
- S
i'd like a hardwired siren option but for indoor. The ring siren could work but I don't want everyone to see the ring logo inside the house - do you have a more discreet option, or is the logo plate removable or something?
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30-06-2021 01:26:40
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- S
My finshed setup, 12V DIN rail transformer for the Siren, 5V DIN rail transformer for the keypad. 
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05-07-2021 11:30:42
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SKeypad showing mains power from the 5V DIN transformer. Contrary to what the Ring representative says above, this does not require any dismantling of a Ring device, just a small amount of surgery on a Micro-USB cable (which can be the Ring supplied one or any spare Micro-USB cable. 
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05-07-2021 11:39:03
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seb101
Well I can confirm this works just perfectly, for both the keypad and the siren. One word of caution, when splicing a micro-USB onto the end of the 5V connection for the keypad, the wiring colors inside USB cables are pretty randomised by cable manufacturer, always test with a volt-meter before you connect to the keypad to make sure you haven't mis-wired or reversed the polarity.
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25-06-2021 08:25:44
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