The Edwards EST 3-RS232 Ancillary Communications Card enables connection to serial devices and uses Class B configuration.

Features & Specifications

• Voltage: 24 VDC
• Standby: 58 mA at 24 VDC
• Alarm: 58 mA at 24 VDC
• Circuit configuration: Class B
• Circuit type: RS-232 serial, two optically-isolated circuits
• Circuit length: 50 ft. (15.2 m) max.
• Wire size: 18 AWG (0.75 mm²) min.
• Temperature: 32 to 120°F (00 to 49°C)
• Relative humidity: 0 to 93% noncondensing
• Dimensions: 5 × 5 × 8 in
• Brand: Edwards, EST
• Series: EST3: Multiplexed Fire Alarm System
• : 0.33 lbs
• Condition: New
• Type: Communication Card