Datasheet RX480E-4, TX118SA-4 (Qiachip) - 7

Image: A comprehensive wiring diagram illustrating how to connect the TX118SA transmitter to a power source and buttons, and how the RX480E receiver can be connected to a ULN2003 driver chip for controlling external devices like relays. This diagram illustrates a common setup where the transmitter sends signals to the receiver, which then activates outputs. The ULN2003 driver chip is often used with the receiver to drive higher current loads like relays.
3.2. Power Supply and Antenna Transmitter (TX118SA):
Connect DC 3V-24V to the power input pins.
Receiver (RX480E):
Connect a stable DC power supply (typically 5V) to the +V and GND pins.
Antenna:
For optimal performance, connect a 433MHz spring antenna or a 1/4 wave wire antenna (approx. 17.3cm for 433MHz) to the ANT pin on both modules.
4. OPERATING MODES AND PAIRING
The RX480E receiver module supports three working modes: Momentary, Toggle, and Latched. These modes determine how the receiver's output pins behave when a signal is received from a paired transmitter. Document Outline QIACHIP RX480E+TX118SA 3SETS QIACHIP 433MHz RF Transmitter and Receiver Module Instruction Manual 1. Product Overview 2. Component Identification and Specifications 2.1. RX480E Receiver Module 2.2. TX118SA Transmitter Module 3. Setup and Wiring 3.1. Basic Connection Diagram 3.2. Power Supply and Antenna 4. Operating Modes and Pairing 4.1. Learning Button Usage 4.2. Mode Descriptions 4.3. Pairing Process 5. Troubleshooting 6. Specifications 7. Maintenance and Care 8. Warranty and Support