“OL” will be dispalyed.), Data Hold: HOLD (Shows “HOLD”), Unit: °C/°F (Shows “°C/°F”), Overload indication: 100%RH/OL (Maximum display humidity is 100%RH; if the temperature is lower than 20°C or higher than 60°C, MAX/MIN Measurement: MAX/MIN (Shows “MAX/MIN”), Humidity Range: 0-100.0%RH 0.1%RH ±5%RH Under normal temperature condition(23°C ±5 °C), Sampling Rate: 1/s (Sampling rate is once per second), Temeprature: -10-60°C/14-140°F 0.1°C/0.2°F ±1.0°C/±2.0°F Under normal humidity condition(40%RH-75%RH).
Price history, coupons and price alert are available on this page. What is the best price?
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
Click here to search by yourself. Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China. You can get coupon down below.
Link: Banggood product page
1. ($22.57): BGherra
this code has to be applied in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): e2bcea, TTxBG10, 15ANENG, BGTR15, BG2647, BGAFF10OFF, BGTT10, bGhOnEy10, 13f142
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Price history and price alert
Here is price history (for all/most countries) for UNI-T UT333 Thermometer Hygrometer. The lowest price was: $13.19.
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)).