, Relay light: Available, Weight: 500g, Upgrading: USB online upgrade, Model: ET16S, Language: Chinese / English, Voice: Support voice broadcast, Hall sensor rocker assembly, Band: 2.4GHz (Bidirectional), , 180/270°Servo: Available, Display: 3.5inch touch / 480*320 / color display, External RF modules: Support, Resolution: Full Channel 4096, Wireless signal copy: model data, Current: 260-400mA, Application: Helicopter / Airplane / Multi-rotors /Vehicle / Ship., Channel: 16CH, Programming: 5 Groups Mixed Control, Voltage: 3.5V-13V(1S-3SLithium battery), Storage: 30 models.
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 coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
1. ($169.08): BGGAL8
2. ($169.08): BGRCParts8
3. ($169.08): tRaDetRaCKeR
4. ($169.08): 8wEbgaInS5
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/i1u
Old coupons (from the oldest to the newest): 7bcdf9, Parts8, BGRCRR9, BGCuponation10, BGDAVIS, BGradio9, BG70e5fc, BG1efeb0, MVC8SPRING, 8BGwbg2204
(these coupons are old, so probably won’t work)
Price history and price alert
Do you need price history chart (for all/most countries) for WFLY ET16S RC Transmitter R9M with RF201S? There we go. The lowest price was: $137.99.
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)).