Use coupon and get FNIRSI-FNB48P Ammeter Voltmeter USB Tester TYPE-C with BT for $38.99 (from Banggood). Just check coupons out (with price alert and history). Let’s see what best price is ATM.
FNIRSI-FNB48P Ammeter Voltmeter USB Tester TYPE-C Fast Charge Detection Trigger Capacity Ripple Measurement with CNC Metal Shell – FNB48P With BT
Latest price update (UTC time):
Banggood ($38.99)
Banggood warehouse is located in China. Coupons for FNIRSI-FNB48P Ammeter Voltmeter USB Tester TYPE-C with BT? Nope, there’re no coupons in Banggood. Good or bad price? Hmmm, price is higher than average (which is $38.92 right now), so better set price alert down below…
Link: Banggood product page
Price: $38.99
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
There were country-specific coupon codes published on Couponsfromchina social channels and price alerts. Coupon price may vary by country, because there’re different VAT rates, shipping cost etc. There is a chance that some latest coupons are still working:
1. (26.9.2024, $34.99): BG892d6d
Item: FNIRSI-FNB48P Ammeter Voltmeter USB Tester TYPE-C with BT
Countries: Germany
Old coupons (from the oldest to the newest): BGM1TOOLS88, BGddd805, BG20236Tool, BGTOOS729, BG814478, BG784871
(I don’t think these’re gonna work, but you can try ’em out anyway)
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Price history and price alert
Price history (for all/most countries) for FNIRSI-FNB48P Ammeter Voltmeter USB Tester TYPE-C with BT is here.
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)).