A 31V transformer (often called a plug‑in power adapter or controller) is used to convert standard mains voltage (e.g. 220–240 V AC) down to a safer low voltage (31 V) for LED or string lights. These are common for holiday/Christmas lighting, fairy lights, net lights, icicle lights, etc.
These transformer plugs often come with these additional features:
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Multiple lighting modes (e.g. steady on, twinkle, chase, fade)
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Timer function (commonly 6 hours on / 18 hours off)
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Memory function (remembers last mode after turning off)
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Waterproofing / weather resistance (e.g. IP44 rating)
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Over-voltage, over-current, short-circuit protections
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Compatible connector type (often 2-pin plug for light string)
Many 31V transformer plugs have a rated output of ~6 W (or sometimes lower, e.g. 3.6 W).
For example, one transformer plug product lists:
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Input: 220–240 V AC, 50–60 Hz
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Output: 31 V, rated power 6 W
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8 lighting modes + timer + memory
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IP44 waterproof design Yowin+1
So if the TobeBright version exists, it likely has a similar spec sheet.
What to Consider / Verify Before Buying
When picking a transformer plug (or replacing one), make sure of:
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Voltage compatibility
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It must output 31 V (or match the required low voltage of your light string).
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If you use a mismatched voltage, lights may flicker or be damaged.
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Power / wattage rating
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The plug must be able to supply enough watts for your lights.
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Using a transformer with too low wattage can overload it.
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Connector type / polarity
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The output connector (often 2-pin) must match your light string’s plug.
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Also ensure correct polarity (if applicable) or correct AC/DC designation.
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Protection & safety features
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Over-current, over-voltage, short-circuit protection
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Safe insulation and design
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Adequate weather protection (e.g., IP44 or better) if used outdoors
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Mode / timer / memory features
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If you want programmable lighting (twinkle, etc.), the controller should support those modes
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Timer and memory are useful so you don’t have to reconfigure daily
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Durability & certifications
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Use materials that can handle outdoor conditions
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Check for safety certifications (CE, etc.)
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Replacement / Similar Products
Since I didn’t find the "TobeBright" version, here are a few similar 31V transformer plugs you can check. They might differ slightly, but can guide you or serve as replacements.
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Yowin 31V Transformer Plug for Christmas Lights, 8 Modes, Timer, IP44 (Input 220‑240 V, Output 31 V, 6 W) Yowin
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CZJUTAI 31V 6W Transformer — 8 modes, memory, timer, IP44 czjutaipowersupply.com
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Luccika 3.6W 31V LED Transformer (Shuko plug) — supports 8 light mode patterns, memory, IP44 rating Amazon
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Meision 31V Power Adapter for Christmas Lights — 8 modes, timer, memory, IP44 Amazon
If “TobeBright” is a brand you have or a local label, check its specifications and see which of these matches most closely.
If you want, I can try to dig further and see if I can find the exact “TobeBright 31V Transformer Plug” (images, datasheet, where to buy). Do you want me to hunt for that?