$10.99 – Battery: 3V(CR2450);, Sensor: 47X27X13.5mm, Wireless connection: Zigbee3.0;, Material: PC;, Magnet: 32X15.6X13mm, Dimension: .
When I was updating this page the price was $10.99 for SONOFF SNZB-04-ZB Wireless Door/Window Sensor (in Banggood). Price history, coupons and price alert are available on this page. Let’s see what best price is ATM.
Latest price update (UTC time):
Banggood ($10.99)
Banggood warehouse is located in China. Coupons for SONOFF SNZB-04-ZB Wireless Door/Window Sensor? Nope, there’re no coupons in Banggood. Isn’t it too expensive? From what I can see this price is higher than average price ($8.26).
Link: Banggood product page
Price: $10.99
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): BGSONOFF15, BGSNZB04, BgcLuBofErtA10, BGSONOFF16, BGSTHO15, BGHONEY2110, BGSHOM15, BG7fca50, 13f142, BGSHE15, 6GSGIT, BGSmart6, 8Couponsde, MVC8SPRING, 8BGwbg2204, 2203ActiesNL, tRaDetRaCKeR, 8wEbgaInS5, pROMo8cuPoN, BGJUNEGSG9, BG15Sonoff, TTSUMMER8, Cuponation9, 9OFFSUMMER, BG8745ca, BG9ded82
(I don’t think these’re gonna work, but you can try ’em out anyway)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – SONOFF SNZB-04-ZB Wireless Door/Window Sensor [EU] ($-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 SNZB-04-ZB Wireless Door/Window Sensor? There we go. The lowest price was: $5.57.
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)).