Kowa KE811CT - Manual (Page 30)

7-2. The specification of control system connectors
7-2-1.Contact output connectors for power control (POWER CONT) and option (OPTION A-F)
button output
relay (no polarity) relay (no polarity)
Relay type : photo MOS relay, make contact
Rating : maximum 50mA, less than AC/DC 24V
Internal circuit is as follows.
Caution
Do not supply more than AC/DC 24V.
When option button is set as momentary output, output pulse width is about 200msec.
Relay specification