$17.99 – Enclosure Material: Fire-retardant ABS V0, Security Mechanism: WPA-PSK/WPA2-PSK, Gang: 2, Color: White, Max Current: 15A(total) /10A(1 gang), Humidity: 5%-95%RH / Non-condensing, Frequency: 802.11 b/g/n, Operating Temperature: -10ºC-40ºC, Product Dimensions: 54*49*24mm, Power Supply: 100-240V AC, Max Power: 3300W(total) / 2200W(1 gang).
I am monitoring price for SONOFF DUALR3 Dual Relay Module Switch and it is for $17.99 now (in Banggood). Price history, coupons and price alert are available on this page. What is best price?
Latest coupon and price update (UTC):
Banggood ($17.99)
Banggood warehouse is located in China. I don’t think there is an active coupon right now – at least in my database. The question is – is it a good price? Hmmm, price is higher than average (which is $11.94 right now), so better set price alert down below…
Link: Banggood product page
Price: $17.99
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/i1u
Old coupons (from the oldest to the newest): BGDUALR3, BGDUALR313, 13f142, BG36c08a, BGee1672, BG619c1a, 6GSGIT, ADMITAD2212, BGSmart6, 8Couponsde, MVC8SPRING, 8wEbgaInS5, pROMo8cuPoN, BGJUNEGSG9, BG15Sonoff, BG8ReviTrage, Cuponation9, 9OFFSUMMER, BG32140d
(these codes were not working in latest coupon update, but you can check them out anyway)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – SONOFF DUALR3 Dual Relay Module Switch [EU] ($-3)
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.
Price history and price alert
Do you need price history chart (for all/most countries) for SONOFF DUALR3 Dual Relay Module Switch? There we go. The lowest price was: $9.99.
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 couldn’t find any coupon for this product on latest product update. I don’t know if this is a good price – number of records in my database is too low!