Operating Humidity: 5%-90%RH / Non-condensing, Enclosure Material: Fire Retardant ABS, Certification: CE / FCC, Product Dimensions: 104*55*73(mm), Max. Current: 10A, Power supply: 90V~250V AC(50/60Hz), Encryption: WEP/TKIP/AES, Security Mechanism: WPA-PSK/WPA2-PSK, Wireless standard: 802.11.b/g/n 2.4G WiFi, Operating Temperature: 0ºC-40ºC(32°F-104°F), Max power: 2200W, Standard: FR Plug.
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
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. ($63.75): BG8OFFCOUPON
2. ($63.75): TTBLACK5
just apply this code in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/i1u
Old coupons (from the oldest to the newest): BGSmart6, MVC8SPRING, 8BGwbg2204, 2203ActiesNL, tRaDetRaCKeR, 8wEbgaInS5, pROMo8cuPoN, hoNEYbGdeAlS, Cuponation9, COUPONSDE1wk, BG8ReviTrage, BGcoupon8off, BGGutscheine
(these codes were not working in latest coupon update, but you can check them out anyway)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – 5x SONOFF S26 10A AC90V-250V Smart WIFI Socket FR [EU] ($-3)
Price history and price alert
Price history (for all/most countries) for 5x SONOFF S26 10A AC90V-250V Smart WIFI Socket FR is here. The lowest price was: $63.05.
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)).
. I don’t know if this is a good price – number of records in my database is too low!