Bosch B921C

The Bosch B921C is a two-line LCD capacitive touch keypad designed for fire and intrusion alarm system control in commercial installations, featuring a modern smooth-surface design with no mechanical buttons for superior cleanability and durability. This SDI2-bus-compatible keypad provides responsive capacitive touch keys along with four supervised inputs for flexible system integration, while the integrated LCD display delivers real-time status information and system messaging. The keypad includes dedicated fire and burglary function keys with visual status indicators for both fire and burglary conditions, enabling authorized personnel to efficiently control and monitor alarm system status in lobbies, security offices, and facility control centers.

Key Features

• Two-line LCD display for real-time system status and messaging
• Capacitive touch keys with no moving parts for enhanced durability and cleanability
• SDI2 bus compatible for seamless control panel integration
• Four supervised inputs for flexible programming options
• Dedicated fire and burglary function keys with visual status indicators
• Modern smooth-surface design fits contemporary commercial decor
• Easy-to-clean surface for high-traffic area installations

Technical Specifications

• Display Type: Two-line LCD with custom messaging capability
• Interface: SDI2 bus (fully supervised device)
• Input Capacity: Four supervised inputs
• Key Type: Capacitive touch (no mechanical switches)
• Status Indicators: Fire indicator, burglary indicator
• Function Keys: Fire control, burglary control, arm/disarm functions
• Design: Smooth capacitive surface for cleanability
• Power Supply: 12 VDC from control panel via SDI2

Certifications

• Bosch SDI2 fully supervised device standard
• UL Listed for fire and burglary alarm applications
• Compatible with Bosch B6512, B5512, B4512, B3512 control panels