The M12-EXM-IRC21, an IR cutoff filter exchanger from Sunex Inc., provides true day and night capability for cameras based on Pixim Digital Pixel System chip sets. Operation requires a mating two-pin connector and a ±3.3-V, 100-ms signal. One signal inserts the IR cut filter between the lens and the sensor for daytime operation, optimizing color rendition. The opposite signal exchanges the filter for a clear AR-coated window to maximize the light transmission in low-light conditions. The latching solenoid requires power only to switch, minimizing power consumption and heat generation.