The ST0643-00-N01-A from Amphenol RF is a Antenna with Frequency 433 MHz, Gain -1.8 to 0.9 dBi, Power 1 W, Operating Temperature -25 to 70 Degree C. Tags: Monopole, Chip, Ceramic, Embedded, Low Profile. More details for ST0643-00-N01-A can be seen below.