can you use a 173mm wire for the antennas for better range ?

I have only used the aerials supplied with the units.

What is the maximum range for these modules on an arduino for example?

A few 10s of meters in open air. It's very much a case of YMMV. The MCU drive has no effect on the the range, but you'll get a better range if you position the aerial correctly. HAM radio clubs and similar websites are the best source of information regarding this sort of tech. 433Mhz being UHF only really travels in straight lines and it won't punch through walls, etc.

Do the transmitters have unique ID's so as not to trigger multiple receivers in range?

Yes, I believe 65,535 (16 bit) IDs, so the chances of having two with the same ID is slim.

I have a receiver situated approximately 10m from the transmitter. The transmitter has the included aerial attached. The receiver has no aerial attached. There are two solid brick walls and a wooden floor between tx and rx. I have a multitude of other devices running at 2.4GHz (BT, wifi, XBee) and 864MHz (XBee) in the immediate vicinity. This setup works 100% of the time without fail. I have not tested full range with higher gain aerials but I expect the distance achieved would be at least 15m and ait further clear line of sight.

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QIACHIP RX480E 433 mhz RF Transmitter and Receiver Module 4 Channel Tx118SA | Wireless Remote Control Switch for Arduino,ESP32,Raspberry Pi,Superheterodyne,GPIO Ready,EV1527 learning code

Product ID: 201144783

Details

Brand
QIACHIP
Connectivity technology
433 MHz RF
Included components
433mhz RF and
Map type
Street
Model name
RX480e 433mhz
Mounting type
Handlebar

📡433 MHz wireless frequency

🔄EV1527 rolling code security

🛠️4 digital outputs GPIO-ready

€ 30.59

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Description

🚀 Elevate your smart control game with effortless wireless precision!

COMPACT DIY FRIENDLY - Mini 3.3–5V module fits easily into smart home projects, gates, alarms, and lighting setups.
ROBUST 50 M SIGNAL RANGE - Reliable, stable transmission up to 50 meters in open space for uninterrupted control.
VERSATILE OPERATION MODES - Choose between momentary, toggle, or interlock modes with a simple learning button.
PLUG PLAY WIRELESS CONTROL - No RF programming needed—pair remotes instantly and start controlling.
SEAMLESS MULTI DEVICE INTEGRATION - Directly connects to Arduino, ESP32, Raspberry Pi & more without extra decoders.

The QIACHIP RX480E is a compact 433 MHz RF transmitter and receiver module featuring EV1527 rolling code security and four digital outputs. Designed for seamless integration with popular microcontrollers like Arduino and Raspberry Pi, it offers up to 50 meters of reliable wireless range and versatile control modes, making it ideal for smart home automation, security systems, and DIY projects.

Specifications

ASIN	B0838WXFKJ
Are Batteries Included?	No
Best Sellers Rank	45,329 in DIY & Tools ( See Top 100 in DIY & Tools ) 2 in Radio Wall Transmitters
Box Contents	433mhz RF Transmitter and Receiver Module
Brand Name	QIACHIP
Compatible Devices	[VARIES]
Compatible with Vehicle Type	Motorcycles
Connectivity Protocol	RF
Control Method	Remote
Country of Origin	China
Customer Reviews	4.3 4.3 out of 5 stars (186)
Display Type	Momentary,Toggle,Latched
Human Interface Types	Buttons
Item Highlight	Wireless Remote Control Switch for Arduino,ESP32,Raspberry Pi,Superheterodyne,GPIO Ready,EV1527 learning code
Manufacturer	QIACHIP
Manufacturer Part Number	QIACHIP_480E_118S_TX3SET
Map Coverage Type	Street
Model Name	RX480e 433mhz rf transmitter and receiver
Model Number	RX480E-4+TX118SA*3
Mounting Type	Handlebar Mount
Network Connectivity Technology	433 MHz RF
Number of Items	3
Number of Packs	3
Operating Systems	Windows
Product Features	433mhz rf wireless remote
Screen Size	1 Centimetres
Sport Type	Outdoor Lifestyle
Supported Satellite Navigation System	GPS

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€ 30.59

Duties & taxes included

In stock

Sold byAmazon BelgiumDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Belgium.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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