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RGL SMART-G3 Grade 3 PSU With LCD Diagnostics: Know the Fault Before You Touch a Wire
Posted:
July 02, 2026
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Door Entry Direct
Stop guessing what your
power supply is doing.
The RGL Electronics SMART-G3 is a Grade 3 PSU with a built-in LCD display that gives installers real-time visibility of system status, battery health, and fault conditions, so you know exactly what is happening without putting an installer on site.
If you install or maintain access control and security systems, you already know that a power supply fault can bring an entire installation down, and tracking one down without the right diagnostics can eat hours. The RGL Electronics SMART-G3 is a Grade 3 power supply unit with a built-in LCD display that monitors battery health and surfaces fault codes the moment something goes wrong, so the guesswork is gone from the moment you open the enclosure door.
Why it belongs on your next installation
It is compliant to EN50131-6 and also suitable for general system monitoring where Grade 3 is not required. Whether you are speccing a new installation or looking for a reliable upgrade, the SMART-G3 is a unit that works across a wide range of jobs.
13.8V
Regulated output voltage
3A
Output current
18aH
Max battery recharge capacity
24hrs
to 80% battery recharge time
Most power supply faults do not announce themselves politely. They show up as an access control panel that stopped responding at 2am, a battery that was silently failing for weeks, or a mains issue nobody caught until a resident was locked out. By the time you are on site, the fault is already old news and the diagnostic trail is cold.
We stock the SMART-G3 because it changes that. The LCD display monitors battery health continuously, and when something goes wrong the unit surfaces a fault code rather than leaving you to probe around in the dark. That means faster fault resolution and fewer wasted visits, which matters just as much to your customers as it does to you.
How to get the most out of the SMART-G3
The unit covers both Grade 3 security installations and general-purpose access control, so the first step is knowing which application you are working with. From there, speccing it in is straightforward.
Spec it in four steps
- Confirm whether the installation requires Grade 3 compliance or general-purpose PSU use.
- Check the tamper requirement: front tamper only (Grade 2) or front and rear tamper (Grade 3).
- Confirm battery back-up needs : Recharges an 18aH battery (min 10v) to 80% in 24 hours.
- Order it, fit it, and let the LCD do the monitoring from that point on.
If a fault does occur, the display surfaces it immediately. The full fault code set covers:
The full fault code set covers: EPS (mains fail), APS (battery fail), PO (output fail), ACF (AC failure), BF (battery failure), BVL (battery voltage low), BR (battery reverse), NB (no battery), VH (voltage high), VL (voltage low), OL (output overload), NO (no output), and SC (short circuit). No guesswork, no unnecessary callouts.
No guesswork, no unnecessary callouts.
New to the site
See the SMART-G3 and login for your trade price.
Grade 3 compliance, built-in LCD diagnostics, and a product that cuts fault resolution time.
0208 621 6210 | [email protected] | Monday to Friday, 08:00 to 17:00
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