Altitude: <2000 meters, Measuring voltage accuracy: ± (2% + 5), Working hum heart ty: 20% -75% RH, Working voltage / measuring voltage range: 90-250v / 45-65Hz, RCD current: > 30mA, Working temperature / 0-40 ° C, Whole machine working current: <3mA (not in RCD status), LCD operating voltage: 220v ± 20V, Storage temperature: -10 ~ 50 ° C, Storage humidity: 20-80% RH. Get coupons, create price alert or check price history out! Do you want to know what the best price is?
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
Click here to search by yourself. Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China. I couldn’t find any coupon for this product on latest product update.
Link: Banggood product page
Price: $-3
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): BG55a773, BGGines, BG55da75, BGM1TOOLS88, BG20236Tool, BGTOOS729
(these codes were not working in latest coupon update, but you can check them out anyway)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – Mustool MT10S MT10E Socket Outlet Tester [EU] ($-3)
Price history and price alert
Here is price history (for all/most countries) for Mustool MT10S MT10E Socket Outlet Tester. The lowest price was: $7.99.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).
. I don’t really know if this price is reasonable, coz there’s no price history in my DB. We have found one coupon for this product!