The one marked with T is the transmitting head, the one marked with R is the receiving head.
Description.
Nominal frequency (KHz): 40KHz
Transmit sound pressure at 10v (0dB = 0.02mPa): >/=110dB
Receiver sensitivity at 40khz (0dB = V/ubar): >/= -75dB
Capacitance at 1khz, Sections with T are transmitters, sections with R are receivers
Includes.
6pcs ultrasonic transmitter probes
6pcs ultrasonic receiver probes