Description
433 MHz Wireless Remote Control Switch – 12V DC 1-Channel Relay Receiver + On/Off Remote
Control lights, locks, pumps, electronic devices and automation circuits wirelessly with a compact 433 MHz RF remote and 12V single-channel relay receiver. A simple standalone wireless switching solution that does not require WiFi or internet.
12V DC
1-Channel Relay
NO / NC / COM
বাংলায় সংক্ষেপে: এই 433 MHz Wireless Remote Control Switch ব্যবহার করে দূর থেকে light, electronic lock, pump, relay-controlled device এবং বিভিন্ন DIY automation load ON/OFF করা যায়। Receiver module টি 12V DC-তে চলে এবং একটি single-channel relay দিয়ে load control করে। WiFi বা Internet প্রয়োজন হয় না।
Quick Overview / এক নজরে
Key Features / প্রধান বৈশিষ্ট্য
433 MHz Wireless Control
Direct RF communication between remote and receiver without router, WiFi or mobile application.
12V DC Receiver
Suitable for many battery, adapter, automotive-style and automation power systems.
1-Channel Relay
Controls one independent electrical circuit using the onboard electromechanical relay.
NO / NC / COM Output
Choose normally-open or normally-closed switching according to your project requirement.
Multiple Working Modes
Supports Momentary, Toggle and Latching / On-Off operation depending on programming.
Remote Included
Compatible A/B key-fob style wireless transmitter supplied together with the receiver.
Technical Specifications / স্পেসিফিকেশন
Relay Output Connection / রিলে কানেকশন
COM • NO • NC
Working Modes
Momentary
The relay remains active only while the programmed remote button is pressed.
Toggle
Press once to change the relay state and press again to return it.
Latching / On-Off
Separate remote commands can provide ON and OFF operation depending on receiver programming.
Important: Remote-button behaviour depends on how the receiver is programmed. Test the selected mode before final installation.
Applications / ব্যবহার ক্ষেত্র
Lighting Control
Wireless switching for compatible lights, LEDs and decorative lighting systems.
Electronic Lock
Useful for compatible electromagnetic lock and DIY access-control systems.
Pump / Motor Control
Can operate suitable control circuits or an external contactor for larger loads.
Home Automation
Add standalone wireless switching without needing internet connectivity.
Robotics
Useful as a remote trigger for robotic mechanisms, actuators and experiments.
DIY Electronics
Suitable for student projects, prototypes and electronics-learning applications.
Package Includes / প্যাকেজে যা থাকছে
Basic Setup Guide / সহজ সেটআপ
- Connect a regulated 12V DC power supply to the receiver with correct polarity.
- Connect your load using COM + NO or COM + NC according to the required behaviour.
- Pair / learn the remote with the receiver according to the desired operating mode.
- Test the relay first using a safe low-voltage load before connecting the final device.
- Install the receiver securely and keep the RF antenna area as clear as practical.
Why Choose a 433 MHz RF Switch?
Unlike WiFi switches, this receiver does not require a router, smartphone application, cloud account or internet connection. The handheld remote communicates directly with the receiver, making it useful for simple and reliable standalone remote switching.
WiFi বা Internet ছাড়াই সরাসরি remote দিয়ে device control করা যায় বলে এটি light switching, electronic lock, gate project, pump control, home automation এবং robotics-এর জন্য খুব practical।
Important Notes / গুরুত্বপূর্ণ নোট
12V DC Input: Always confirm polarity before connecting power. Do not apply mains AC directly to the receiver power input.
Wireless Range: The quoted range is under ideal open-space conditions. Walls, reinforced concrete, metal objects, electrical noise and remote battery condition can reduce actual range.
Relay Rating: Check the current and voltage rating printed on the actual relay fitted to your supplied module before switching high-power loads.
Inductive Loads: Motors, solenoids, contactors and pumps can create switching surges. Proper suppression or an appropriately rated external contactor may be required.
Mains Safety: For AC mains installation, use proper enclosure, fuse/breaker, insulation and qualified electrical installation.
Frequently Asked Questions / FAQ
Does this switch require WiFi or internet?
No. The remote communicates directly with the receiver using 433 MHz RF.
What voltage does the receiver use?
The receiver operates from a 12V DC power supply.
How many loads can it control?
It is a 1-channel receiver, so it directly controls one independent relay circuit.
Can I control a light with this module?
Yes, provided the voltage and current of the light are within the rating of the relay and installation is done correctly.
Can I use it with an electronic lock?
Yes. It is suitable for many compatible electromagnetic and electronic lock projects.
What do COM, NO and NC mean?
COM is the common terminal, NO is Normally Open and NC is Normally Closed.
Can it control a motor or water pump?
Yes for suitable loads within the relay rating. For larger motors or pumps, use the relay to control a properly rated contactor or motor-control device.
What is the remote range?
It can reach up to approximately 100 metres under ideal open-space conditions. Indoor range is normally shorter.
Are remote and receiver both included?
Yes. The package includes one 433 MHz receiver and one compatible wireless remote.
Can multiple remotes be paired?
This depends on the receiver’s learning memory and firmware version. Check the supplied receiver behaviour before relying on multiple-remote operation.
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