is a high-performance Passive Infrared (PIR) motion sensor module, frequently cited as an equivalent or alternative to the popular
. It is designed to detect infrared radiation (heat) emitted by objects like human bodies and animals, making it ideal for security systems and automated lighting. Tayda Electronics Technical Specifications
is highly versatile due to its wide operating voltage and adjustable controls Handson Technology Operating Voltage: 5V to 20V DC. Static Current:
Typically less than 65µA, making it suitable for battery-powered devices. Output Signal:
Digital TTL output (3.3V High / 0V Low), compatible with most microcontrollers like Raspberry Pi Detection Range: Up to 7 meters (adjustable via potentiometer). Detection Angle: Approximately 110° to 120°. Delay Time: Adjustable from roughly 0.3 seconds to 5 minutes. Operating Temperature: -15°C to +70°C. Tayda Electronics Pin Configuration & Adjustment
The module typically features three main pins and two potentiometers for fine-tuning. Power input (5–20V).
Digital output pin that goes High (3.3V) when motion is detected. Ground connection. Sensitivity Adjustment:
Turning this potentiometer clockwise increases the detection distance. Delay Adjustment:
Controls how long the output remains High after motion stops. Operating Modes
modules include a jumper to select between two trigger modes Single Trigger (L):
Once motion is detected and the output goes High, it will stay High for the set duration and then go Low, even if there is still motion. Repeatable Trigger (H):
The output stays High as long as continuous motion is detected. The delay timer restarts with every new movement. Key Advantages PIR Motion Sensor HW416B - Tayda Electronics
The HW-416B PIR Motion Sensor is a high-quality, adjustable module widely regarded as a reliable alternative or "clone" of the standard Go to product viewer dialog for this item.
. While "HW-416B" often appears as a specific product code from certain manufacturers (like Popular Electronics ), its technical performance is virtually identical to the , often featuring slightly tighter component tolerances. Key Performance Specifications hw416b pir sensor datasheet better
Operating Voltage: 4.5V to 20V DC, making it highly compatible with 5V logic systems like Arduino and Raspberry Pi.
Detection Range: Adjustable from 3 to 7 meters using an onboard potentiometer. Detection Angle: Approximately 100° to 120° cone angle.
Delay Time: Adjustable from 5 seconds to 5 minutes (300 seconds) via a second potentiometer.
Power Consumption: Extremely low static current (<50 µA), ideal for battery-powered IoT applications. Expert & User Review Highlights Reliability: Experts from AliExpress Wiki note that the
often exhibits better thermal stability than generic budget clones, showing fewer false triggers when exposed to HVAC airflow.
Ease of Integration: It features a simple three-pin interface (VCC, OUT, GND) that outputs a 3.3V TTL signal, eliminating the need for complex level shifting.
Versatile Trigger Modes: Includes a jumper to switch between L (non-repeatable trigger) and H (repeatable/re-triggerable) modes, allowing you to customize how it responds to continuous movement.
Setup Tip: Users recommend mounting the sensor at least 2 meters high and avoiding placement near heat sources or direct sunlight to prevent false positives. Comparison with Alternatives Panasonic EKMB1 Go to product viewer dialog for this item. SparkFun Mini (STHS34PF80) Go to product viewer dialog for this item. DIY, Prototyping, Low-cost Industrial, Ultra-low power High-precision presence detection 2 µA 3–7m (Adjustable) 5m (Fixed) 4m (Fixed) Adjustability Potentiometers (Manual) Adjustability Adjustability Software-controlled (I2C) PIR Motion Sensor Detector Module HC-SR501 - SunRobotics
Introduction
The HW416B is a passive infrared sensor module designed for human body detection. It is widely used in security systems, automatic doors, and lighting control applications. The sensor is highly sensitive, reliable, and easy to use.
Key Features
Pinout and Connections
The HW416B PIR sensor module has three pins: is a high-performance Passive Infrared (PIR) motion sensor
Datasheet Parameters
Here are the key parameters extracted from the HW416B datasheet:
Sensor Characteristics
The HW416B PIR sensor uses a pyroelectric sensor to detect infrared radiation emitted by the human body. The sensor has a high sensitivity and can detect temperature differences as small as 0.1°C.
Output Signal
The output signal of the HW416B is a digital signal that goes high (1) when a person is detected and low (0) when no person is detected. The output signal can be connected directly to a microcontroller or other digital circuit.
Adjustable Delay Time
The HW416B allows for adjustable delay time, which can be set using a potentiometer on the module. The delay time can be adjusted from 2-4 seconds.
Applications
The HW416B PIR sensor is suitable for a wide range of applications, including:
Operation and Installation
To ensure reliable operation, the HW416B PIR sensor should be installed:
Conclusion
The HW416B PIR sensor is a highly sensitive and reliable sensor module suitable for a wide range of applications. Its low power consumption, compact size, and digital output signal make it easy to use and integrate into various systems. By understanding the datasheet parameters and characteristics, designers and engineers can effectively use the HW416B to create efficient and reliable detection systems.
References
Since there isn't a widely distributed commercial component specifically labeled "HW416B" in major component databases (it is likely a house-marked version of a generic PIR module, similar to the HC-SR501 or SR602, or a typo for the HW-416 relay module), this review focuses on the most probable candidate: generic compact PIR sensor modules often found under similar part numbers on Amazon, AliExpress, and electronics kits.
If you are looking for a PIR sensor "better" than the standard bulky blue boards (like the HC-SR501), here is a review of what you are likely looking at.
| Symbol | Parameter | Min | Typ | Max | Unit | |--------|-----------|-----|-----|-----|------| | VCC | Operating voltage | 3.0 | 5.0 | 5.5 | V | | ICC | Quiescent current | 45 | 55 | 100 | µA | | VOH | Output high level | VCC-0.5 | VCC-0.3 | - | V | | VOL | Output low level | - | 0.2 | 0.5 | V | | TH | Delay time (fixed mode) | 2.5 | 3 | 3.5 | sec | | TH | Delay time (adjustable) | 0.3 | - | 500 | sec | | TLO | Lockout time (after trigger) | 1.5 | 2 | 2.5 | sec | | D | Detection distance (with stock lens) | 3 | 5 | 7 | meters |
The stock fresnel lens is cheap plastic. You can upgrade the lens with a universal PIR lens (e.g., from a KC7783R) to achieve the claimed 7 meters. Also, the sensor is less sensitive to motion moving directly toward it versus moving across its field of view.
Adjustment: Turn the right potentiometer fully clockwise, then back off 15 degrees. This prevents saturation.
If you're comparing sensors, here is the truth the datasheets won't tell you:
| Feature | HW416B | HC-SR501 | |---------|--------|----------| | Size | Smaller (32mm x 24mm) | Larger (48mm x 28mm) | | Voltage range | 3.0–5.5V | 4.5–20V | | Quiescent current | ~55µA | ~100µA (but stable) | | Retriggering jumper | Yes (poorly labeled) | Yes (clearly labeled) | | Built-in regulator | No | Yes (AMS1117 3.3V) | | Best for | Battery-powered, compact devices | Arduino projects, higher voltage |
Verdict: The HW416B can be better for low-power, 3.3V systems (ESP32, Raspberry Pi Pico) if you follow the power filtering advice above. Otherwise, the HC-SR501 is more forgiving.
int pirPin = 2; int ledPin = 13;void setup() Serial.begin(9600); pinMode(pirPin, INPUT); pinMode(ledPin, OUTPUT);
void loop() int motion = digitalRead(pirPin); if (motion == HIGH) digitalWrite(ledPin, HIGH); Serial.println("Motion detected!"); delay(1000); // simple debounce else digitalWrite(ledPin, LOW);