The Honeywell 05704-A-0121/05704-A-0131 is a relay interface assembly providing a compact, economical solution for interfacing gas detectors with control systems. It is designed for use with Honeywell Analytics’ System 57 gas detection system, yet it can also work with other systems that have compatible signal levels.

Relay Configuration

The relay interface assembly has 16 relays. You can configure them as either Single Pole, Normally Open (SPNO) or Single Pole, Single Throw (SPST). The gas detectors activate the relays, which control various external devices like alarms, ventilation systems, and shut-off valves.

Enclosure and Power

Housed in a rugged, NEMA 4X-rated enclosure, the relay interface assembly is suitable for indoor or outdoor use. It operates on an external 24 VDC power supply.

Key Features

• 16 relays (12 SPNO, 4 SPST)
• Compatibility with Honeywell Analytics’ System 57 gas detection system
• Usable with other compatible gas detection systems
• Rugged, NEMA 4X-rated enclosure
• External 24 VDC power supply

Applications

• Industrial gas detection
• Commercial gas detection
• Institutional gas detection
• Residential gas detection

Specifications

• Input signal: 4-20 mA
• Output signal: Relay contacts
• Number of relays: 16
• Relay configuration: SPNO or SPST
• Power supply: 24 VDC
• Enclosure rating: NEMA 4X
• Operating temperature: -40 to 80°C (-40 to 176°F)
• Humidity: 0 to 95% RH (non-condensing)