$18.99 – Display screen: 1.44 Inch color LCD display, with communication.
I have just checked coupons. The lowest price I could get is $18.99 for RIDEN UM34C Voltmeter Ammeter (in Banggood). Get coupons, create price alert or check price history out! You probably want to know what is the best price?
Latest coupon and price update (UTC):
Banggood ($18.99)
Banggood warehouse is located in China. There is no active coupon in my database right now (for Banggood). Well, is it a good price anyway? Well, this price is higher than average price ($14.54)
Link: Banggood product page
Price: $18.99
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/i1u
Old coupons (from the oldest to the newest): tps6786, elec, BG40UM34, FBCOUPON1, BG34CT, BGUM34, BGRUMB15, BGAFF10OFF, BGCuponation10, BGHONEY2110, BG46eafa, BGee441e, 00c906, BG00c906, 2022ACTIESNL, Terence, 8Couponsde, MVC8SPRING, 8BGwbg2204, 2203ActiesNL, pROMo8cuPoN, BGJUNEGSG9, TTSUMMER8, Cuponation9, BG8ReviTrage, BG589b2e
(probably won’t work, but you can try them out)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. China – RIDEN UM34 Voltmeter Ammeter ($15.99)
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.
Price history and price alert
Check out price history chart (for all/most countries) for RIDEN UM34C Voltmeter Ammeter. The lowest price was: $14.09.
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)).