Model: D1, Incandescent bulb: 200W, Dimension: 62*47*32.5mm, Output: 100-240V AC 50/60Hz, RF band: 433.92Mhz, Max. current: 1A, Enclosure material: PC V0, Dimmable LED: 150W, Wi-Fi: IEEE 802.11 b/g/n 2.4GHz, Input: 100-240V AC 50/60Hz.
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 code price check (UTC time):
Banggood
Banggood warehouse is located in Europe 
. I found coupon for you. Check this out.
Link: Banggood product page
1. ($7.43): 2203ActiesNL
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/i1u
Old coupons (from the oldest to the newest): elec, BGTT10, bGhOnEy10, BGSMOFF, BGSONOFF15, BGELIG0920, 13f142, BgcLuBofErtA10, BGSONOFFD1, BGSONOFF16, BGAFF10OFF, BGSTHO15, BGCuponation10, BGHONEY2110, BGSHOM15, 6GSGIT, ADMITAD2212, BGSmart6, BGe8f407, MVC8SPRING
(probably won’t work, but you can try them out)
Price history and price alert
Here is price history (for all/most countries) for SONOFF D1 Smart Dimmer Switch [EU]. The lowest price was: $6.79.
Price records source(s): Banggood
Click on image to enlarge. ![Price history for SONOFF D1 Smart Dimmer Switch [EU]](https://couponsfromchina.com/pricehistory/History25741.png "SONOFF D1 Smart Dimmer Switch [EU] price history")
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)).