Calpac Green Dot Laser Diode Modules are high quality and designed for commercial, industrial, medical, and OEM applications requiring longer duty cycles, frequent intermittent use, and application specific tolerances.Green Lasers project an extremely bright, visible reference that can be clearly seen on electronic screens, reflective and opaque surfaces, in bright or dark ambient light conditions. In dimmer conditions the radiant beam as well as projected dot are visible, making them ideal for night time applications like astronomy. Portable Diode Modules also available with integrated battery power as well as both click on/off and pressure switch CP-TIM-311-GS