Package weight: 270g, Maximum display value: 6000 Counts, Product size: 182x 62.1x 33.4mm, Automatic shutdown time: 15 minutes, Power supply: 2 X AAA batteries (not included), Working height: up to 2000m, Color box size: 217x 85x 45mm, Maximum allowable voltage: 600V DC or 600V AC, Model: ST212, Color: Black / Red, Sampling time: about 3 times/sec, Unit display: with function / power unit display, Weight: 149.2g.
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Aliexpress
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Click here to search by yourself. Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China. There are no active coupons for this product, but the price is pretty low isn’t it?
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): BGc8df5e, BGGines, BGb38197, BGM1TOOLS88, BG20236Tool, BGTOOS729
(these codes were not working in latest coupon update, but you can check them out anyway)
Price history and price alert
Do you need price history chart (for all/most countries) for MUSTOOL ST212 Current Voltage Multimeter? There we go. The lowest price was: $24.49.
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)).