Just check coupons out (with price alert and history). Let’s see what best price is ATM.
Under Voltage Monitoring 7.5 V+/-0.5V, Emission Distance >=120 m (Open area), Voltage 3V Button Battery, (Already includes for your convenient using), Working Temperature -10℃ ~50 ℃, Type 433MHz New Door Window Alarm Sensor, Triggering Distance >20mm, Emission Current <=15mA, Emission Frequency 433MHz, Static Current <=10uA
Aliexpress
There’re some similar (or not) items on Aliexpress
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 Europe . There is no active coupon in my database right now (for Banggood).
Link: Banggood product page
Price: $-3
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BG16DG02, bgssaff9, BGDigoo15%, BGaDmITAd, aff7off, BGBFAFF2019, BGCITYADS2019, BGDG15, BGSAMH, BGSMARTHO, 20%DG422, BGSM15, BGSMOFF, BGDGASG, BGDGSG, BGSAMRTH, BGDGDOS, BgcLuBofErtA10, BGDGKITG, BGDIGOO433UK, BG15SH12, BGAFF10OFF, BGSTHO15, BGDG433, BGDSENORP, BGDSHO, BGHONEY2110, BG3e6f47, BG657a87, BGdd8f1f, BGef1e79, BGc8ff28, BGHU1033, 6GSGIT, BG18091c, BG87aa99, ADMITAD2212, BGfb8e6e, BGSmart6, MVC8SPRING, 8BGwbg2204, 2203ActiesNL, tRaDetRaCKeR, 8wEbgaInS5, pROMo8cuPoN, BGJUNEGSG9, Cuponation9, 9OFFSUMMER, BG7824cf, BG8171cb, BG8OFFCOUPON, TTBLACK5
(probably won’t work, but you can try them out)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. China – DIGOO 433MHz Door & Window Alarm Sensor ($-3)
Price history and price alert
Price history (for all/most countries) for DIGOO 433MHz Door & Window Alarm Sensor [EU] is here.
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)).