Go down and check coupons out. Remember to check price history if it is available. You probably want to know what is the 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 price update (UTC time):
RF interface: SMA-outer screw inner hole (adapted antenna inner screw inner pin), Remote control refresh rate: 25Hz-500Hz, Power supply: internal power supply: 6-13V / external power supply 6-16V, Model: FLASH_TX, Remote control distance: >3000m, Wireless frequency: 2400-2480MHz, 2.4GHz Flash TX Module: , Size: 64*52*40mm, Transmitting power: <27dBm
Banggood
Banggood warehouse is located in China. I couldn’t find any coupon for this product on latest product update.
Link: Banggood product page
Price: $-3
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): Parts8, BGradio9, BG70e5fc, BGGAL8, BGRCParts8, BG1efeb0, BGf1d139, 8BGwbg2204, tRaDetRaCKeR, BG6f8538, 8wEbgaInS5, pROMo8cuPoN, BG8RCToy, hoNEYbGdeAlS, BGRCT10, BGJUNEGSG9, BGRADIORU, BGToys8, BGSaleFeb8, BGMatt2022, BG589b2e, BG8FORMULAMX
(you can check these old coupons out, but these probably won’t work)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. China – Namimno ExpressLRS ELRS 2.4G RC Nano RX ($-3)
Price history and price alert
Do you need price history chart (for all/most countries) for Namimno ExpressLRS ELRS 2.4G RC Flash TX Module? There we go.
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)).