Lamp Status Alarm

Features:

• The unit is a battery operated device, to be placed on top of the sight port of a water purifier and to monitor the visible light output
• It will also indicates a lamp failure when the AC power to the lamp is removed
• A photoelectric sensor detects the presence of the visible light emitted through the sight port of the water purifier and activates an audible sounder when that light level has fallen below a certain level
• The audible sound consists of a high frequency tone which is pulsed at two or three cycles per second
• The internal battery is a 9-volt Alkaline, which will last more than a year with normal operation. A power supply adapter is supplied as an optional extra
• The adapter allows operating power to be supplied from the building supply, but allows the unit to transfer to battery in the event of an AC failure
• It gives somewhat more output from the sounder and ensures that the
  internal battery will not have to deliver any power except for an
  occasional AC ‘brown-out’
• To ensure successful operation it is recommended that the alarm is tested frequently
• To test the unit, remove it from the top of the sight port and cover up the large hole in the
  base of the unit
• If the sounder does not operate, or if it is very weak, then the battery will need to be replaced
• The battery can be changed after removal of four screws on the cover
• This alarm does not measure the ultraviolet output level of the water purifier and for an accurate measurement of the ultraviolet intensity

Specifications:

• Voltage: 9 VDC
• MicroAmps (normal operation): 9
• Milliamps (lamp off): 15
• Battery required: 9-volt Alkaline
• Dimensions: 3-1/2in H x 2-1/2in W x 2in D
• Weight: 6 oz.
• Audible output: 85 dbs. @ 2 ft.
• Pulse rate (Approx.) 3 pulses/second
• Tone frequency: 3500 Hz