Basically copy coupon, view price history or create e-mail price alert. Do you want to know what the best price is?
Video Playback: 4 Channel Simultaneous Playback, Working temperature: -10 ~ 55°C, Backup: Hard disk / USB HDD / Network, Video Compression: H.264, Wireless standard support: IEEE802.11b / 802.11g / 802.11n Draft, VGA Output: 1*VGA(1440*900 /1280*1024 /1024*768 Selectable), Frame Rate: 25FPS, Excluding HDD, Interface: 4*RJ-45 10M/100M; WIFI / USB / DC 5.5mm, Network Service support: TCP/IP / UDP / HTTP /DDNS / SMTP / LAN / DHCP / PPPoE, Video Output: HDMI / VGA / WIFI / RJ45, AC Power Supply: 100V~240V; 47Hz～63Hz, Video HD Output: HDMI (1280*1080), Video Input: 4CH WIFI or RJ45, Work Humidity: 10%-90%, USB Interface: 1/2 USB 2.0, Interface: 1/4 adaptable RJ45 10M/100M / 2 WIFI interface, Work power: DC 12V 2A, Video Resolution: 4CH 1080P
Aliexpress
There’re some similar (or not) items on Aliexpress
| Image | Product (link) | Price | Coupons |
|---|---|---|---|
 |
Smart WiFi Switch DIY Timer 1/2/4CH DC5V2V Intelligent Switch Breaker Module APP Control Work with Alexa Google Assistant | $15.19 | – |
Click here to search by yourself. Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in Europe 
. Uhm… There’s no price history (in my database) for this product right now.
Link: Banggood product page
1. ($182.97): JanBGCoupon8
2. ($186.95): BG589b2e
apply code in your basket (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
There were country-specific coupon codes published on Couponsfromchina social channels and price alerts. Coupon price may vary by country, because there’re different VAT rates, shipping cost etc. There is a chance that some latest coupons are still working:
Old coupons (from the oldest to the newest): BGAFF10OFF, BGCuponation10, 7bcdf9, BGHONEY2110, BANGGOODSD, 6GSGIT, 00c906, BG00c906, ADMITAD2212, Tabby20, 2203ActiesNL, BG1efeb0, 8Couponsde, MVC8SPRING, 8BGwbg2204, tRaDetRaCKeR, 8wEbgaInS5, pROMo8cuPoN, hoNEYbGdeAlS, BGJUNEGSG9, BG8ReviTrage, Cuponation9, COUPONSDE1wk, BgGoodie9, BGcoupon8off, BGGutscheine, BG8OFFCOUPON, TTBLACK5
(probably won’t work, but you can try them out)
Price history and price alert
It doesn’t make sense to generate price history chart, because there is one price record which is: $134.99.
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)).