The coupon price for Current Digital Signal is 18.99 USD (in Banggood). You can create price alert here, copy coupons and view price history. What is best price?
Latest coupon code price check (UTC time):
Banggood (18.99 USD)
Banggood warehouse is located in China. I couldn’t find any coupon for this product on latest product update. Is it a low price? Looks like a good price to me (average is 20.60 USD).
Link: Banggood product page
Price: 18.99 USD
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): BGM1TOOLS88
(I don’t think these’re gonna work, but you can try ’em out anyway)
Aliexpress
There’re some similar items on Aliexpress in my database. There may be some other items though.
| Image | Product (link) | Price | Coupons |
|---|---|---|---|
 |
110V/220V 60W Electric Soldering Iron | 6.41 USD | – |
 |
Foam Cutter Pen 110V-240V 15cm | 8.33 USD | – |
 |
TINTON LIFE 220V/110V Vacuum Sealer with 10 Bags | 12.57 USD | – |
 |
TintonLife 220V/110V Food Vacuum Sealer | 15.46 USD | – |
 |
GOXAWEE 110V 220V Electric Mini Drill Rotary Tool | 17.14 USD | – |
 |
TINTON LIFE 220V/110V Vacuum Sealer with 10 Bags | 18.55 USD | – |
More on Aliexpress… Here are coupons that you can use.
Price history and price alert
Here is price history (for all/most countries) for 0-10V 0-22mA Voltage Current Digital Signal Generator with Battery.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).