Operating Humidity: 0-95%RH，no condensation, Dimensions: 65x65x56mm, Execution Standard: GB/T1002-2008, Technical Specifications: 4000W-16A MAX, Name: Air Conditioning Controller P3, Operating Temperature: -10°C ~40°C, GB/T 2099.3-2015, 250V-, Zigbee3.0 IEEE 802.15.4, Battery Model of Temperature And Humidity Sensor: CR2032, Q/QLML006, GB/T 2099.1-2008, Wireless Protocol: WIFI IEEE 802.11 b/g/n 2.4GHz, Model: KTBL12LM.
Basically copy coupon, view price history or create e-mail price alert. Let’s see what best price is ATM.
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 coupon and price update (UTC):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
1. ($50.14): BGSHOM15
2. ($53.09): BGHONEY2110
this code has to be applied in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/i1u
Old coupons (from the oldest to the newest): BGAQP3, BGSMOFF, bgshOOp10, BGSAMRTH, 7d18f7, BgcLuBofErtA10, BGAFF10OFF, BG15SH12, BGSTHO15
(I don’t think these’re gonna work, but you can try ’em out anyway)
Price history and price alert
Check out price history chart (for all/most countries) for Xiaomi Aqara Smart Air Conditioning Controller P3. The lowest price was: $45.04.
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)).