DC Power Systems & Inverters

Quest Controls TELSEC ESB

The TELSEC® ESB provides an integrated surveillance solution to monitor and control all environmental and access control functions and equipment alarming:

  • Performs all controlling, monitoring, and communication functions in a single product.
  • Install in CEVs, CUEs and Cabinets.
  • Install in COs and Data/Computer Centers.
  • SNMP, embedded Web Server, and Email Alarm Messaging.
  • Compact, versatile package operates with a standard control program or can be customized to meet your requirements.
  • Enables remote interrogation of remote sites from any alarm and/or maintenance center.
  • UL Listed, and CE, mountable in customized UL approved Panel Enclosures.

Acting as your smart eyes and ears, the TELSEC® delivers large savings and quick payback by:

  • Reducing energy costs via intelligent HVAC lead/lag control strategies.
  • Reducing visits to remote sites.
  • Eliminating downtime by acting as an early warning system.
  • Reducing capital expenditures by replacing multiple devices to accomplish the same task.
  • Extending life of critical operating equipment including air conditioners, generators and power equipment.
  • Providing remote visibility and 2-way communications.


  •  TCP/IP over Ethernet Connectivity. Supports SNMP v1, SNMP v2c.
  • Expandable to 128 universal inputs, 64 digital outputs and 10 analog outputs plus 16 stand alone RTU HVAC controllers.
  • Controls multiple air conditioning units for fan, cooling, heat, and economizer through optional Intelligent Roof Top Unit Stand Alone Controllers.
  • Non-volatile FLASH memory prevents program loss & stores program upgrades.
  • Monitors all environmental alarms: temperature, humidity, fire/smoke, toxic and combustible gas, high water.
  • Built-in RS-232 communications port for on-site monitoring and programming.
  • Built-in 2 line, 40 character LCD display and 18 button keypad for system status and setpoint changes.
  • Card access control of up to 4 doors with 600 cards per system, logging last 800 entries plus Intrusion Monitoring.

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