Range of temperuature measurement: , Response spectrum: 8~14um, Service temperature: 0~40C, D: S: 12: 1, Laser: <1mW/630-670nm level 2, Response time: <0.5s, Automatic shutdown: 30 seconds, Emissivity: 0.1~100 ajustable, Temperature difference alarm: free set upper limit and lower limit alarm in temperature range, Data retention: there are, Storage temperature: -10~60C, IR01C: -50~800C, ambient temperature: -10~60C, Power supply: 1.5V*2 AAA battery(not included), ambient humidity: 0%~100%RH, Laser positioning: 12 point ring indicating temperature sensitive zone.
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.
Updated:
Banggood
Warehouse in China.
Link: MESTEK IR01D Infrared Thermometer Humidity Meter
Price: $-3
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Additional Banggood coupons:
1. First page
2. Second page
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – MESTEK IR01D Infrared Thermometer Humidity Meter [EU/CZ] ($-3)
Price history and price alert
Check out price history chart (for all/most countries) for MESTEK IR01D Infrared Thermometer Humidity Meter. The lowest price was: $17.88.
Price records source(s): Gearbest, 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)).