Gas Master Control Unit: 180x128 graphic LCD display, 8 LED indicators and signaling buzzer, 9-button keypad. Power supply: 85-254 Vac 50/60 Hz or 12 Vdc. Inputs: 8 x 4-20 mA, 1 external Fire Alarm input, 1 external Manual Reset input. Modbus interface for up to 32 gas concentration transmitters. Outputs: 5 x 5A 250 Vac SPDT relays.

The Seitron Gas Master Control Unit # RYF01M is manufactured by Seitron. Valley Instrument Service is an authorized Seitron dealer offering full sales support, NIST-traceable calibration, and expert technical assistance.

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Model	Description	Price
ACSR02	5-30Vac/dc Alarm Beacon. Power Supply: 7-30 V or 7-32 V, 50-60 Hz. Power Absorption: 2 W. Sound Output: 100 dB @ 1m. IP54 rating. Dimensions (WxDxH): 120 x 67 x 99 mm. Working Temperature: -20 to +50°C. Storage Temperature: -30 to +60°C. Humidity: 20-90% RH non-condensing. Transparent red housing.	Request Quote	View Details →
ACSR03	85-264 Vac Alarm Beacon. Power Supply: 85-264 V, 50-60 Hz. Power Absorption: 6 W. Sound Output: 100 dB @ 1m. IP54 rating. Dimensions (WxDxH): 120 x 67 x 99 mm. Working Temperature: -20 to +50°C. Storage Temperature: -30 to +60°C. Humidity: 20-90% RH non-condensing. Transparent red housing.	Request Quote	View Details →

Model	Description	Price
ACSR02	5-30Vac/dc Alarm Beacon. Power Supply: 7-30 V or 7-32 V, 50-60 Hz. Power Absorption: 2 W. Sound Output: 100 dB @ 1m. IP54 rating. Dimensions (WxDxH): 120 x 67 x 99 mm. Working Temperature: -20 to +50°C. Storage Temperature: -30 to +60°C. Humidity: 20-90% RH non-condensing. Transparent red housing.	Request Quote	View Details →
ACSR03	85-264 Vac Alarm Beacon. Power Supply: 85-264 V, 50-60 Hz. Power Absorption: 6 W. Sound Output: 100 dB @ 1m. IP54 rating. Dimensions (WxDxH): 120 x 67 x 99 mm. Working Temperature: -20 to +50°C. Storage Temperature: -30 to +60°C. Humidity: 20-90% RH non-condensing. Transparent red housing.	Request Quote	View Details →

Gas Master Control Unit

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