The TELEDYNE GRF121-5 is an electromechanical relay designed for use in radio frequency (RF) applications. This relay is capable of handling up to 0.25A of current and operates on a 5VDC power supply. With a coil resistance of 61Ohm, it is a Single Pole Double Throw (SPDT) relay, offering versatility in switching between two different circuits. The compact size of the relay, measuring at 9.53x12.07x9.78mm, and its surface-mount device (SMD) design make it highly suitable for use in space-constrained electronic systems.