These optically isolated solid-state relays provide zero-crossing triac
switching for use in Energy Management Systems and where transients may pose a
problem.
The REE-2103 has four separate triac outputs, while the REE-2104 has one. Each
output has an associated red LED (light emitting diode) for indicating the
output is switched on. An AUTO-MANUAL-OFF jumper is provided to override the
output.
