






⚡ Stay wired right, every time with MX 1177!
The MX Ac Line Fault Detector (Model 1177) is a compact, battery-free AC socket tester designed to quickly identify wiring faults such as open earth, open neutral, and reverse polarity in 5A electrical outlets. Featuring intuitive red, yellow, and green LED indicators, it ensures safer electrical installations for homes and light commercial spaces. Lightweight and durable, it’s an essential tool for electricians, maintenance teams, and DIY enthusiasts aiming to prevent electrical hazards and protect equipment.



| ASIN | B00HZL0NVS |
| Best Sellers Rank | #359 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #7 in Voltage Testers |
| Brand | MX |
| Brand Name | MX |
| Colour | BLACK |
| Country of Origin | India |
| Customer Reviews | 4.0 out of 5 stars 3,241 Reviews |
| Included Components | 1 Pcs Line Fault Detector |
| Item Dimensions | 38 x 40 x 46 Millimeters |
| Item Type Name | Power & Hand Tools |
| Item Weight | 44 Grams |
| Item dimensions L x W x H | 38 x 40 x 46 Millimeters |
| Manufacturer | Mx Mdr Technologies Ltd., Seller 5253 , Mumbai Central, Biwandi - 400008 |
| Manufacturer Contact Information | Seller 5253 , Mumbai Central, Biwandi - 400008 |
| Maximum Operating Voltage | 250 Volts (AC) |
| Measurement Type | Outlet Wiring Test |
| Model Number | 1177 PACK OF 1 |
| Packer Contact Information | Eagle Network Supply Pvt. Ltd. , Khasra No. 399 Delhi - 110030 |
| Power Source | Corded Electric |
| Power Source Type | Corded Electric |
| Style | AC Socket Line Fault Tester |
| Style Name | AC Socket Line Fault Tester |
| Unit Count | 1 Count |
| Warranty Description | 1 Year Warranty on Manufacturing defects |
A**K
Very good product. Buy.
Works really well. I hired an electrician to install a few switchboards, fans and lights. On testing circuits with this device, I found earthing missing (critical fault) in some sockets and live / neutral wrongly connected in a few sockets. I feel this device is necessary for every home to protect equipment and perhaps save lives. Buy this inexpensive gadget especially since we hardly have electricians who are really 'qualified' to do the work
S**T
Good, handy product
Very good, handy product hut can I use it as night lamp ?
M**I
Absolutely zd
Absolutely super product, those who leave negative reviews dont know how to use it. The built is sturdy very much and fits imto socks snugly well. One guy had left review doesnt even fit into 5a socket thats because 5a is non standard socket, most sockets r 6a not 5a. And those who say multiple lights are on, that indicates multiple faults. Those who say loght turns on even when off..try turning the switch on, it will show live and neutral reversed, which wud make the current flow even when switch is off, hence it lights up When the light is dimly appearing means fault is there (like earth fault) but is more minor. Its dead accurate in my opinion and has saved my appliances many times, and my family from shocks. Highly recommended, also can be easily used by electricians and people who are less experienced with complex multimeters for fault detection as its simple 3 led and written aout it right there no complex screens. This device is dead accurate, if u think its wrong or faulty then first check your wirings.
H**M
Not recommended
It's small & not suitable for all sockets
A**A
Good Product. Thank you.
Good Product. According to my requirement. I am satisfied. Thank you.
A**N
Worst product waste of money
Does even work product returned
S**A
Accurate fault detector for the price.
WARNING: ELECTRICITY IS FATAL AND CAN KILL YOU. TAKE APPROPRIATE PRECAUTION BEFORE ATTEMPTING REPAIRS ON ELECTRONIC PRODUCTS. The MX 1177 works quite well, it's a small form factor voltage detector with three pins, and it works on most standard switchboards without problems. The front has three LEDs which glow accordingly to the status of the wiring in the switchboard. I've seen some reviews that mentioned that all the LEDs glow regardless of the status of the connection, but that's not true in my case. The lights glow appropriately and I've been able to figure out that three switchboards in my house were wired incorrectly (power and neutral wires inverted). I opened the switchboards and sure enough, each of the switchboards had inverted power and neutral wires. The only problem with the unit itself is that it's a bit difficult to fit into all kinds of switchboards as the pins are spaced wider than usual (by approximately .2-.4mm) which can make some switchboards feel a bit dangerous to plug into. A little bit of fiddling and the plug will fit but please be careful as to not use too much force as the chassis of the plug or switchboard plate may get damaged. This is an easy recommend, does the job and is cheap. 4 stars because I've purchased it recently, the fifth can only be given to things that last longer than 6 months!
M**N
Recommended for every household!
It's a simple plug-in device that checks for common faults in 230V AC sockets. this is an essential safety gadget for homes where wiring issues are common. If you're not a pro electrician, it's perfect for peace of mind—plug in, check, and fix if needed.
Trustpilot
4 days ago
3 days ago