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

QIACHIP RX480E 433 mhz RF Transmitter and Receiver Module 4 Channel Tx118SA

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

⚡Direct CMOS-level output, no external decoding needed

📡433 MHz RF wireless range up to 50m

🔄4-channel multi-mode output (Momentary, Toggle, Interlock)

235 kr

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Description

🚀 Elevate your wireless control game with effortless 433MHz precision!

COMPACT ROBUST DESIGN - Superheterodyne tech ensures ultra-reliable signal reception in a mini form factor.
SEAMLESS MCU INTEGRATION - Direct digital outputs compatible with Arduino, ESP32, Raspberry Pi & more.
EXPAND YOUR CONTROL NETWORK - Pair multiple remotes effortlessly—scale your smart home or industrial setup with ease.
PLUG PLAY WIRELESS CONTROL - Instant pairing with EV1527 remotes—no RF coding headaches.
VERSATILE MULTI MODE OPERATION - Choose Momentary, Toggle, or Interlock modes to fit any project.

The QIACHIP RX480E 433 MHz RF transmitter and receiver module offers reliable, long-range wireless control with up to 50 meters open-space range. Featuring built-in EV1527 decoding and four configurable digital outputs, it supports multiple working modes (Momentary, Toggle, Interlock) and pairs easily with multiple remotes without complex programming. Compact and compatible with popular MCUs like Arduino and Raspberry Pi, it’s ideal for smart home automation, security systems, garage doors, and DIY projects.

Specifications

ASIN	B0838WXFKJ
Are Batteries Included?	No
Best Sellers Rank	88,331 in DIY & Tools ( See Top 100 in DIY & Tools ) 7 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
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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235 kr

Duties & taxes included

In stock

Sold byAmazon DenmarkDelivered 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 Denmark.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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