![Multiple Control Unit – 2 out of 3 – (CU-5)](https://we-are-imv.com/wp/wp-content/uploads/2022/10/cu5.jpg)
Seismometer options
Multiple Control Unit – 2 out of 3 –
(CU-5)
This device makes reliability of the relay contact output of the alarm signal to control or stop activation higher.
An alarm signal is output when 2 units out of 3 generate alarm signals.