Wavelength: 650nmOutput: Switching TransducerSize of Transmitter Module: 15*24mmSize of Receiver Module: 1. 52*2. 22cmVoltage: 5VMaterial: High-quality Polymer**Precision Optical Sensing**The KY-008 650nm Laser Transmitter and Receiver Module Kit is an indispensable tool for anyone working with Arduino or other microcontroller boards. The kit includes both a transmitter and receiver module, each featuring a unique design that allows for precise optical sensing. The laser sensor module is a non-modulator tube, which means it operates with a 3dB bandwidth and requires no additional modulation for operation. This makes it a robust and reliable choice for various applications. **Versatile Application Scenarios**The high-quality materials and compact design of these modules make them suitable for a wide range of projects. The laser transmitter module, with its 15*24mm size, is easy to integrate into your existing designs, while the receiver module's modest dimensions of 1.52*2.22cm allow for a variety of placement options. The kit is designed to work seamlessly with Arduino, providing a straightforward interface for users to control and monitor their projects. **Robust Performance and Ease of Use**The KY-008 Laser Transmitter and Receiver Kit offers a clear advantage in terms of performance. The laser transmitter and receiver modules are equipped to operate at a voltage of 5V, ensuring compatibility with most microcontroller boards. The laser transmitter module emits a 650nm wavelength, which is visible to the naked eye, making it easy to monitor and troubleshoot your projects. Moreover, the advanced relay module in the kit operates with a high-level output when receiving a signal and low-level output when not receiving one, making it easy to interpret and act upon sensor feedback.