Go down and check coupons out. Remember to check price history if it is available. You probably want to know what is the best price?
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest coupon code price check (UTC time):
Dimension: 14.5cmx 6cmx 2.7cm, Operating Temperature: 0℃ ~ 40℃ 32℉ ~104℉, Overoad Alarm: Button light flashes, Operating Humidity: 10%-85%RH, Accuracy: ±2%, Range Selection (Attenuation Rate): 50X / 500X, Power: 0.85W, Power Supply: DC 5V / USB supply, Bandwidth: 100MHz, Storage Humidity: 5%-90%RH, Storage Temperature: -30℃ ~70℃ -22℉~158℉, Rise Time: 3.5ns, Input Cable Length: Approx. 60cm, Output Voltage: >3V
Banggood
Banggood warehouse is located in Europe 
. I’m afraid that there’s no working coupon in Banggood. Sorry, but there’s no price history in my database.
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!
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGherra, BGGines, BGTools8
(probably won’t work, but you can try them out)
Price history and price alert
Price history is not available for this item (not enough database records)! The lowest price was $163.19 though.
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)).