Product Categories > HARK Systems > DM-900 Site Monitors
Obstruction Lighting Hark Site Monitor
DM-900 Site Monitor
The DM-900 Site Monitor is a highly sophisticated stand alone product that delivers quality monitoring at a reasonable price. The DM-900 has eight inputs that can be used to monitor the lights and additional conditions that are important at your site.
The DM-900 has a built in photocell monitor that works with 110VAC and 5VDC photocells. The system logs when the photocell changes from day to night and back to day and will alarm if the photocell fails to change after a predetermined amount of time. The cabinet door is monitored and can be used to generate an alarm when the unit is being worked on and for tamper detection. When there is a power loss an onboard circuit monitors the battery voltage disconnecting it before the voltage drops to low and causes damage to the backup battery.
Hark Obstruction Site Monitor CDMA GPRS Modem
8 Alarm Inputs, configured for contact closure or voltage alarms
Lights, generators, doors or anything that has a contact closure can be monitored.
Built in Photocell Monitoring
Logs when Photocell changes from day to night
AC Power Monitoring
4 Hour Battery Backup
Backup Battery Discharge Protection
Alarms delivered using alphanumeric labeling to simplify understanding of reported conditions
CDMA Wireless Modem
GPRS Wireless Modem
Ethernet TCP/IP Modem
Flashtech™ Remote Photocell Override
The use of non-OEM parts or modifications to original equipment design will void the manufacturer warranty and could invalidate the assurance of complying with FAA requirements as published in Advisory Circular 150/5345-43.