Material ABS + PC, Voltage 5V, Body color black, Size 50 * 50 * 28mm/1.97*1.97*1.10″, Receiver frequency 433.92MHz, Working temperature range -20℃~+75℃, Pressure alarm value 0.3-6.2bar (5-90psi), Receiving sensitivity 110-110dBm.
Price history, coupons and price alert are available on this page. What is the best price?
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.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China. I am tired of searching coupons, but I found one for you…
Link: Banggood product page
1. ($23.75): BGSCM75
apply it in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): BGd68773, MVC8SPRING, 8BGwbg2204, tRaDetRaCKeR, BGAUTO22, BGdcbfa8, BG8ReviTrage, Cuponation9, BGaf3161
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Price history and price alert
Do you need price history chart (for all/most countries) for Waterproof Motorcycle TPMS USB Solar Motorbike System? There we go. The lowest price was: $21.99.
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)).