Also known as the Pegasus 2, the infrared (IR) marker is typically used in night vision operations were detection is denied to those without Night Vision devices (NVD). Manufactured as a covert marker for personnel or equipment, it is the same physical size and weight and constructed similar to the original Phoenix units. With its three channels, the IR-35 offers a variety of combinations for covert signaling, as opposed to the IR-15 (1-Channel) and the IR-25 (2-Channels).