full color stack light with 85 db alarm ^ velocio.net/status 2 GND connections. They're internally tied together, so it doesn't matter which is which. Use them for: V- of stack light's power supply ground of signal connections (if not same as V-) +VDC: 7-28VDC of stack light's power supply Use Sinking (NPN) OR Sourcing (PNP) connections. You may mix and match, but not both for any one connection at the same time. Sinking (NPN) ON when connected to Ground RD: Red connection GN: Green connection BU: Blue connection BZ: Buzzer connection Sourcing (PNP) ON when connected to 3-28VDC RD: Red connection GN: Green connection BU: Blue connection BZ: Buzzer connection 3D Model found at velocio.net/status Colors with simple ON/OFF control PWM lets you to vary the percentage of time a light is ON. Think of it like a dimmer switch. Using PWM with the 3 colors lets you create about any color of the rainbow Mounts with #6 blot (included) Input PWR voltage range (7-28VDC) Input PWR MAX current: (RD, GB, BU, BZ) when all ON Sinking inputs ON threshold (0-1VDC) Sourcing inputs ON threshold (3-28VDC) Sinking or Sourcing signal current draw < 2 mAmp © Velocio Networks, Inc. 2024. All Rights Reserved