FrSky R9M 900MHz RC Transmitter Module (Banggood, Aliexpress: Modulations: PXX or CPPM (auto-detected), Upgrade Interface: Smart Port, Compatibility: R9 series, Vin Voltage Range: 4V-12.6V, External Power Supply: 4V~12V (2s Li-Battery is recommended), Telemetry Interface: Smart Port, or it will damage), (*3s Li-Battery is not recommended as external power supply (the best price with coupon)).
Just check coupons out (with price alert and history). What is best price?
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 code price check (UTC time):
Banggood
Banggood warehouse is located in Hong Kong. I found coupon for you. Check this out.
Link: Banggood product page
1. ($77.39): TTxBG10
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
Old coupons (from the oldest to the newest): 10R9M, 502C6B
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Price history and price alert
Here is price history (for all/most countries) for FrSky R9M 900MHz RC Transmitter Module. The lowest price was: $73.09.
Price records source(s): Banggood
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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)).