The AL6Q-P4-R is an LED illuminated pilot light featuring a square 18mm lens design with a 16mm mounting hole, part of IDEC's A6 Series miniature switches and pilot devices. It incorporates gold-clad silver contacts for reliable low-level switching with a contact configuration of SPDT (Single Pole Double Throw) and is available in both dustproof (IP40) and oiltight (IP65) versions. The unit is rated for a maximum voltage of 250V AC/DC with a thermal current of 3A and a minimum applicable load of 5V AC/DC at 1mA, operating across a temperature range of -25°C to +55°C. The LED includes a built-in current limiting resistor and reverse polarity protection diode, eliminating the need for external resistors. This compact design is ideal for control panels, machinery status indication, and industrial signaling applications where space is limited and reliable visual feedback is required.