Miscellaneous

Model 5000 Desiccant Canister
An ideal for protecting your equipment from rust, corrosion, mold and mildew. It is also reusable by recharging in a standard oven.



Model 5330 Surge Supressor
Lightning protection for low voltage data signal lines



Model 5508 Quartz Clock
Utilizes a laser tuned hermetically sealed Quartz oscillator to control a chart drive for type A and F Recorders.



Series 5600 Batteries
Our valve- regulated batteries set the standard for quality and excellence in rechargeable lead-acid technology.



Model 5603 Battery Float Charger
Designed to provide optimum life to your batteries in standby applications.



Model 5605 Battery Maintenance System
The Model 5605 Battery Maintenance System is an intelligent, micro-controller based charge/discharge system. It is used to test the ability and fully characterize a battery.



Model 5606 Battery Charger
A quality unit that converts standard 120 VAC, 60 Hz into regulated 13.8 VDC power. It is ideal for Store & Forward Repeaters.



Model 8000-3 Modem Lighting Protection Device
The Model 8000-03 Telephone Modem Protection Device is used on the telephone input line to give maximum protection against lightening strikes.



Model 9000 Automatic Gate Control
A complete data sheet is not available at this time. Please call HSE for information.





Series 9900 Shaded Relief Maps
The 9900 Series of shaded-relief maps are manufactured by Raven Maps and Images. The combine exquisite detail and beautiful artwork to create a precise representation of an area. All maps are available at discount prices.