Get coupons, create price alert or check price history out! Do you want to know what the best price is?
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):
Display Type: Digital, Model Number: EZ-9909A, Weight: 170g, Waterproof rating: IP67, Measuring range of table salinity: 0.00-25.00%, Display: Support backlight, The measurement range of sea water salinity: 10.1-200.0ppt., Battery: 3x 1.5V LR44 Button Battery (not includes), 5 in 1 function: TDS/EC/PH/Salinity/Temperature Tester, 5.01-25.00% (±1%), Accuracy: 0.01-5.00% (±0.1%), Display size: 33*24mm, Size and weight: 183*37*37mm(7.2*1.5*1.5in)/90g(3.2oz), PH measurement range: 0.01-14.00pH, EC measuring range: 0-10000US/cm, TDS measurement range: 0-1000ppm
Banggood
Banggood warehouse is located in China. You can get coupon down below.
Link: Banggood product page
1. ($46.76): BGGines
put item in your cart and apply coupon code there after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGBG77169, BG8ca8b3, BGherra
(these codes were not working in latest coupon update, but you can check them out anyway)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – EZ-9909A 5 in 1 TDS/EC/PH/Salinity/Temperature Meter [EU] ($-3)
Price history and price alert
Check out price history chart (for all/most countries) for EZ-9909A 5 in 1 TDS/EC/PH/Salinity/Temperature 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)).
. Coupons for EZ-9909A 5 in 1 TDS/EC/PH/Salinity/Temperature Meter [EU]? Nope, there’re no coupons in Banggood. I don’t really know if this price is reasonable, coz there’s no price history in my DB.