The ST-RX2 has a single line-level audio input and two line-level audio outputs. In the absence of a control input, the NORMAL
module output is fed from the audio input. When the TRIG
control terminal is connected to ground, the input audio is fed to the SELECT
output and the NORMAL
output is switched off.
When the TRIG
terminal is again disconnected from ground, then the SELECT
output is turned off and the NORMAL output is fed from the input. The module contains no relays or other mechanical devices.
