Laser Module 5mW 650nm

From the shop's description

This 5mW laser module emits a small intense focused beam of visible red light. The KY-008 Laser transmitter module consists of a 650nm red laser diode head and a resistor. Due to small current consumption, it can be directly controlled by MCU (Arduino – ESP – Microcontroller) without need to Laser driver. Features Operating Voltage: 5V Output Power: 5mW Wavelength: 650nm Operating Current: less than 40mA 4 DC Songle relays 220V,10A/250V AC 10A/30V Dimensions: 18.5mm x 15mm Instructables on connecting Laser module with arduino