The GRF172 Series from Teledyne Relays is a RF Relay with Frequency DC to 2.5 GHz, Coil Voltage 5.0 to 32.0 V, Voltage 3.8 to 18.0 V (Pick-up Voltage), Power 405 to 440 mW, Resistance 64 to 1600 Ohms. Tags: Centigrid. More details for GRF172 Series can be seen below.