The PIR (Passive Infra-Red) Sensor is a pyroelectric device that detects motion by measuring changes in the infrared (heat) levels emitted by surrounding objects. When motion is detected the PIR Sensor outputs a high signal on its output pin. This logic signal can be read by a microcontroller or used to drive an external load. Dual output modes and a sensible design that performs within stated datasheet specifications are a few reasons over 100,000 units are in use around the world.

Electrical Parameters：

• Product Type: HC--SR501 Body Sensor Module
• Operating voltage range: DC 4.5-20V
• Quiescent Current: <50uA
• Level output: High 3.3 V /Low 0V
• 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
• Board Dimensions: 32mm*24mm
• Angle Sensor: <100 ° cone angle
• Operation Temp: -15-+70 degrees
• Lens size sensor: Diameter:23mm(Default)