The percentage shows how many AliExpress buyers rated this product positively. InstaShop does not edit or filter the rating.
✓ Selected for InstaShop by high positive feedback (88%+) and proven sales
✅ Real-time voltage and current monitoring via dual digital di
✅ Adjustable protection thresholds and automatic recovery dela
✅ Compact DIN rail mounting fits standard electrical distribut
👤 Homeowners and DIYers looking to protect sensitive household appliances from power grid instability.
Price updated
Price range by option: $10.37 – $18.51
Choose an option (6)
Options (6):
ℹ️ Final price per option is set on AliExpress.
Protect your electronics from power surges and overcurrent with this adjustable dual display relay. This essential device is perfect for homeowners seeking to safeguard their electrical systems. It provides reliable monitoring and security for all your sensitive household appliances.
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📈 Price history: is the discount real?
Typical price
Based on InstaShop's daily price tracking on AliExpress since 28.9.2026 · 32 measurements
Today's price
$10.43
checked 29.10
Lowest
$9.77
11.10 · +1 more day at this price
Average · 32 measurements
$10.33
28.9–29.10
We have tracked this product's price for 32 days, since 28.9.2026. The lowest was $9.77 (on 11.10.2026), the average $10.33 and the highest $10.83. Today's price, $10.43, is slightly above the average.
$10.43 · About usual (within 2% of the $10.33 average)
Last 30 days
low $9.77 · average $10.32
Tracked since
28.9.2026 · 32 daily checks
Lowest price
$9.77 (11.10.2026)
Price drops
5 times
At the current price
2 days ($10.43)
Real data only: one price check per day on AliExpress, international listing, in US$.
🔍 In-depth analysis
This dual-display protection relay is a practical component for those looking to safeguard household appliances from the unpredictability of the power grid. Designed for standard DIN rail mounting, it monitors both voltage and current in real-time, providing an automated layer of defense against surges, drops, and overloads. With over 1,500 units moved and a stellar rating near five stars, the market has clearly signaled its approval of this specific model's performance and reliability in real-world electrical panels.
The unit's adjustable nature allows for a degree of customization across different amperage ratings, making it versatile for various household loads. While it targets common 220V/230V systems, the dual display offers transparency that basic breakers lack, letting you see exactly what is happening with your supply. Given the high volume of successful deliveries, this is a seasoned product on the platform that has moved beyond the experimental phase into a trusted consumer choice for basic electrical protection.
✅ Pros
Exceptionally high buyer rating suggests the unit performs reliably under real-world conditions.
Dual digital display provides immediate visual feedback on the health of your electrical supply.
Available in multiple amperage versions (40A to 80A) to suit different circuit requirements.
High order volume indicates a well-tested product with a proven track record among international buyers.
Cons and cautions
Requires professional installation to ensure safety and compliance with local electrical codes.
Specific response times for tripping are not explicitly listed and should be verified for sensitive electronics.
The physical build quality and internal relay longevity are unknown without manufacturer datasheets.
From our data
6 variants on one listing: price and spec change with the option you pick
Price moved between $9.77 and $10.83 since 28 Sep (32 tracked days)
This analysis is written with an AI model from the product data (name, category, price, rating and orders), not from a hands-on test. How we choose and score
Who it's for: It is ideal for homeowners or DIY enthusiasts who want to add an extra layer of visibility and safety to their electrical cabinets. It is particularly useful for those living in areas with unstable power grids or frequent brownouts.
Who should skip it: This is not for anyone lacking experience with high-voltage electrical systems. If you are uncomfortable working inside a breaker box or do not have access to a certified electrician, avoid a DIY installation.
🔎 Check before you buy
Ask the seller for the specific width in DIN modules to ensure it fits your current panel space.
Request a copy of any safety certifications (such as CE) to ensure it meets local regulations.
Confirm the exact minimum and maximum adjustment ranges for both voltage and current tripping points.
Verify if the unit retains its settings after a total power failure.
💰 Value verdict: Given the massive order history and the nearly perfect feedback score, the current price point offers excellent value. It provides a level of digital monitoring and protection that often costs significantly more at local retailers, making it a budget-friendly way to protect expensive electronics from power fluctuations.
💡 Tips
Always have a certified electrician perform the installation to prevent fire hazards or equipment damage.
Before ordering, double-check your main breaker’s amperage to select the correct 40A, 63A, or 80A model to avoid bottlenecking your power.
Test the trip settings with a known safe load once installed to ensure the relay reacts as expected.
Questions about this product
Can I adjust the voltage limits myself?
The product is listed as adjustable, but you should verify the specific menu navigation and the increment steps with the seller before purchase.
Is this suitable for a standard home electrical panel?
It is designed for DIN rail mounting, which is standard in many panels, but you must check the physical dimensions to ensure you have room.
Does it show both voltage and current at the same time?
Yes, the dual display is designed to show both metrics simultaneously, providing real-time monitoring of your home's electrical status.
❓ Questions & Answers
What does it cost in US dollars?
$10.43 - AliExpress's international price at our latest check (29.10.2026). The exact amount in your currency, with shipping, is shown at AliExpress checkout.
Shipping and import taxes to my country?
Delivery to your address, its cost and time depend on the seller and your country; import duty/VAT depends on your country's rules (in the EU, the UK and Australia VAT/GST is usually collected at AliExpress checkout). All of it is shown before you pay.
Is this price tracked?
Yes. We have checked this listing's price 32 times since 28.9.2026 - see the price history and the tracking facts on this page.
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