Go down and check coupons out. Remember to check price history if it is available. What is best price?
Automatic recovery of normal environment, Alarm setting concentration value 6%LEL, High temperature alarm setting value 57℃, Sampling method Natural diffusion, Rated voltage DC5V (Need to be energized all the time, Power supply interface Micro-USB, Warm-up time 180 seconds, Alarm volume ≧70dB (1 meter directly in front), Range 0~100%LEL, Alarm linkage output (optional) Solenoid valve: 12V pulse output, Service life 5years (under normal use environmental conditions), Manipulator 12V/300mA output for 15 seconds, Alarm concentration error ±3%LEL, Response time ≦30 seconds, Working current <200mA, no built-in battery), Model DG-ZXGS21
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China. One coupon is available. Cool!
Link: Banggood product page
1. ($18.99): BG65a97c
coupon code has to be applied in shop’s 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/5cd
Old coupons (from the oldest to the newest): BGDGGS21, BGDGS21, BGXGS211, BGRSDGLD, BGSTHO15, BGHBHJ105, BGHONEY2110, 13f142, BGSHE15, BGCNDGXG, 6GSGIT
(I don’t think these’re gonna work, but you can try ’em out anyway)
Price history and price alert
Check out price history chart (for all/most countries) for DIGOO DG-ZXGS21 WIFI Gas Leak Detector.
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)).