Gas detector detektors E2630-LEL-(hydrogen)-24VDC
power supplt: 24 VDC/AC ±20% (default)
Output relays: 2 x SPDT relays (switch-over contact)
Alarms: blinking LED, buzzer 85 dB
Default alarm level: 10% LEL / 25% LEL
Internal Reference:
E2630-LEL-H2-24-A