When I was updating this page, then coupon price was $17.99 for SINOTIMER SVP688 WiFi Energy Meter (in Banggood). Just check coupons out (with price alert and history). Let’s see what best price is ATM.
SINOTIMER SVP688 WiFi Energy Meter Remote Control Voltage/Current/Leakage Protection Real-Time Monitoring Adjustable Parameters Three Timing Modes Ensure Efficient Energy Management
Latest coupon and price update (UTC):
Banggood ($17.99)
Banggood warehouse is located in China. As you can see I didn’t find any active coupon for this product right now… You probably want to know if this is a good price. Looks like a good price to me (average is $20.74).
Link: Banggood product page
Price: $17.99
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGTOOS729, BG4e7660
(probably won’t work, but you can try them out)
Aliexpress
There’re some similar (or not) items on Aliexpress
| Image | Product (link) | Price | Coupons |
|---|---|---|---|
 |
SVP688 63A 230VAC Smartlife WIFI Relay Energy Meter kWh Metering Switch Timer with Voltage Current and Leakage Protection TUYA | $15.14 | – |
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 SINOTIMER SVP688 WiFi Energy Meter.
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)).