System Sensor B112LP Mounting Base

The Model B112LP detector base is designed for use with System Sensor models 2151 photo electronic and 1151 ionization detector heads. This two-wire base is equipped with screw terminals for the connection of power, ground, and an optional remote annunciator.

Main Features

• Base Diameter: 6.2 inches (157 mm)
• Base Height: 0.95 inches (24 mm)
• Weight: 0.3 lb. (137 g)
• Mounting: 4-inch square box with or without plaster ring. Min. depth–1.5 inches / 3-1/2-inch octagon box. Min. depth–1.5 inches
• Operating Temperature Range: 0° to 49°C (32° to 120°F)
• Operating Humidity Range: 10% to 93% Relative Humidity, Noncondensing
• Electrical Ratings - includes base and detector
• System Voltage: 24 VDC
• Maximum Ripple Voltage: 4 Volts peak-to-peak
• Start-Up Capacitance: 0.02µF Maximum
• Standby Ratings: 20 VDC Minimum / 29 VDC Maximum / 120 µA Maximum
• Alarm Ratings: 17 mA Minimum / 36 mA Maximum
• Reset Voltage: 1.4 VDC Minimum
• Reset Time: 0.3 Seconds Maximum
• (The optional RA400Z operates within specified detector alarm currents.)
• Start-up Time: 34.0 Seconds Maximum
• Relay Contact Ratings:
• Resistive or Inductive (60% Power Factor)
• Form A: 2.0 A @ 30 VAC/DC
• Form C: 2.0 A @ 30 VAC/DC / 0.6 A @ 110 VDC / 1.0 A @ 125 VAC