---
product_id: 143246164
title: "CentIoT - HC-SR501 SR501 - Pyroelectric Infrared PIR Motion Proximity Sensor Module"
brand: "centiot"
price: "S$5"
currency: SGD
in_stock: true
reviews_count: 4
url: https://www.desertcart.sg/products/143246164-centiot-hc-sr501-sr501-pyroelectric-infrared-pir-motion-proximity-sensor
store_origin: SG
region: Singapore
---

# 9m range DC 4.5-20V Adjustable delay 5-200s CentIoT - HC-SR501 SR501 - Pyroelectric Infrared PIR Motion Proximity Sensor Module

**Brand:** centiot
**Price:** S$5
**Availability:** ✅ In Stock

## Summary

> 🚀 Elevate Your Space with Smart Motion Detection!

## Quick Answers

- **What is this?** CentIoT - HC-SR501 SR501 - Pyroelectric Infrared PIR Motion Proximity Sensor Module by centiot
- **How much does it cost?** S$5 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/143246164-centiot-hc-sr501-sr501-pyroelectric-infrared-pir-motion-proximity-sensor)

## Best For

- centiot enthusiasts

## Why This Product

- Trusted centiot brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **🏠 Sleek Design:** Compact and lightweight, perfect for discreet installations anywhere.
- • **🔒 Smart Security:** Elevate your home or office security with cutting-edge motion detection.
- • **💡 Energy Efficient:** Quiescent current under 50uA ensures minimal power consumption.
- • **🌐 Broad Compatibility:** Works seamlessly with Arduino, Raspberry Pi, and more for endless possibilities.
- • **🔄 Versatile Triggering:** Choose between single or repeated triggers for tailored automation.

## Overview

The CentIoT HC-SR501 PIR Motion Proximity Sensor Module is a versatile and efficient solution for both residential and commercial security needs. With a wide operating voltage range, adjustable delay settings, and compatibility with various devices, this sensor is designed to enhance automation and energy management while ensuring a sleek and unobtrusive installation.

## Description

RCWL-0516 is a doppler radar microwave motion sensor module which can act as an alternative to a PIR motion sensorPinFunction 3V 33.3V regulated output. Max 100mA (?) GND Ground OUT Trigger: high (3.3V) if motion detected. 0V normally. VIN4 - 28V supply voltage CDSLDR 10-20k RL, U_LDR > 0.7V = OnNote The PCB color may vary based on production batch.

## Features

- Product Type: HC-SR501 PIR Motion/Proximity/Body/Human Sensor Module
- Operating voltage range: DC 4.5-20V, Level output: High 3.3 V /Low 0V, Quiescent Current: <50uA
- Lens size sensor: Diameter:23mm(Default)
- Angle Sensor: <100 ° cone angle
- Trigger: L can not be repeated trigger/H can be repeated trigger(Default repeated trigger), Delay time: 5-200S(adjustable) the range is (0.xx second to tens of second) Block time: 2.5S(default)Can be made a range(0.xx to tens of seconds

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | CentIoT |
| Colour | Blue |
| Power Source | Battery Powered |
| Item Weight | 7 Grams |
| Maximum Range | 9 metres |
| Mounting Type | Wall Mount |
| Battery Description | Battery Powered |
| Compatible Devices | Arduino, Raspberry Pi, AVR, PIC, 8051, Node MCU |
| Recommended Uses For Product | Residential and Commercial Security (Intrusion Detection, Access Control), Automation (Motion-Activated Lights, Alerts), Energy Management |
| Manufacturer | CentIoT, 69, First Cross, Nehru Nagar, Karaikal, Puducherry – 609605, Contact@centiot.com | www.centiot.com/support |
| UPC | 618020770874 |
| Item Height | 10 Millimeters |
| Item Width | 20 Millimeters |
| Product Dimensions | 3 x 2 x 1 cm; 7 g |
| Item model number | HC-SR501 |
| Are Batteries Included | No |
| Included Components | 1 x CentIoT HC-SR501 SR501 - Pyroelectric Infrared PIR Motion Proximity Sensor Module |
| Manufacturer | CentIoT, 69, First Cross, Nehru Nagar, Karaikal, Puducherry – 609605 |
| Country of Origin | China |
| Item Weight | 7 g |

## Product Details

- **Brand:** CentIoT
- **Colour:** Blue
- **Power Source:** Battery Powered
- **Item Weight:** 7 Grams
- **Maximum Range:** 9 metres

## Images

![CentIoT - HC-SR501 SR501 - Pyroelectric Infrared PIR Motion Proximity Sensor Module - Image 1](https://m.media-amazon.com/images/I/51CTtPE1+gL.jpg)
![CentIoT - HC-SR501 SR501 - Pyroelectric Infrared PIR Motion Proximity Sensor Module - Image 2](https://m.media-amazon.com/images/I/41w61OqaHhL.jpg)
![CentIoT - HC-SR501 SR501 - Pyroelectric Infrared PIR Motion Proximity Sensor Module - Image 3](https://m.media-amazon.com/images/I/51wcbmunHQL.jpg)
![CentIoT - HC-SR501 SR501 - Pyroelectric Infrared PIR Motion Proximity Sensor Module - Image 4](https://m.media-amazon.com/images/I/41073yvA7lL.jpg)
![CentIoT - HC-SR501 SR501 - Pyroelectric Infrared PIR Motion Proximity Sensor Module - Image 5](https://m.media-amazon.com/images/I/41hSLcoxNCL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ fake
*by D***H on 28 October 2024*

it doesnt work dont buy

### ⭐⭐⭐⭐ Quality is good
*by C***L on 3 April 2024*

Material is goodI attached it with 5v relay kit to operate bulb

### ⭐⭐⭐⭐⭐ A awesome product for DIY and projects
*by J***A on 26 June 2019*

Very useful for my project. It was detecting small creature Motion also. Help full from theaves.

## Frequently Bought Together

- CentIoT - HC-SR501 SR501 - Pyroelectric Infrared PIR Motion Proximity Sensor Module
- Aptechdeals Jumper Wires Male To Male, Male To Female, Female To Female/ Breadboard Jumper Wires (40+40+40)

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**Shop now:** [https://www.desertcart.sg/products/143246164-centiot-hc-sr501-sr501-pyroelectric-infrared-pir-motion-proximity-sensor](https://www.desertcart.sg/products/143246164-centiot-hc-sr501-sr501-pyroelectric-infrared-pir-motion-proximity-sensor)

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*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-03-05*