Bard MC4002-AC Dual Unit Lead/Lag HVAC Controller with Base Alarm & Ethernet

The Bard MC4002-AC is an advanced solid-state dual unit lead/lag controller designed for professional HVAC system management. This controller comes factory-equipped with a base alarm board and Ethernet communication capability, making it ideal for telecom shelters, commercial buildings, and industrial facilities requiring reliable climate control and remote monitoring.

Key Features:

• Controls two HVAC units with 2 stages of cooling control per unit
• Integrated base alarm board with Form C dry contact relays (NO and NC switching)
• Ethernet connectivity for remote monitoring and management
• Compatible with systems with or without economizers
• Supports 2-stage or dual compressor systems
• Can be configured for heat pump applications
• Electric reheat dehumidification circuit capability with optional humidity controller
• Digital display shows building temperature and programming functions
• Front panel indicators for all alarm actuations, active cooling/heating stages, and lead unit status
• Easy field upgrade capability - alarm boards snap in, communication cables plug in
• 18-32 VAC input power

The MC4002-AC provides complete flexibility to meet demanding HVAC control requirements with its configurable alarm protocols and professional-grade reliability. All alarm actuations are individually indicated on the front panel, ensuring quick identification of system status and issues.