Product Overview

The Da-Lite 74490 Key Operated 110V Switch is a projection screen control accessory that provides keyed security control for a Da-Lite motorized projection screen operating on 110V power. The key-operated switch prevents unauthorized users from operating the screen independently, making it appropriate for commercial AV installations in government spaces, conference rooms, and facilities where screen operation must be restricted to authorized personnel. This is a line-voltage 110V switch, distinct from low-voltage control systems.

Product Description

The Da-Lite 74490 Key Operated 110V Switch is a Da-Lite projection screen accessory providing keyed access control for motorized screen operation in commercial AV installations. The key-operated design restricts screen control to users who possess the key, which is the appropriate security measure for government spaces, shared conference rooms, and managed facilities where unauthorized screen operation must be prevented. The switch operates at 110V line voltage and is compatible with Da-Lite 110V motorized screens. It mounts in a standard electrical box for a clean, professional installation. A licensed electrician should perform the line-voltage wiring for this switch. This accessory is distinct from Da-Lite’s low-voltage control systems and is selected specifically when the screen motor uses 110V line voltage control rather than low-voltage control.

Key Features

• Key-Operated Security Control Restricts screen operation to authorized personnel with the physical key.
• 110V Line Voltage Operation Compatible with Da-Lite 110V motorized screen motors.
• Wall-Mount Installation Mounts in standard electrical box for professional commercial AV appearance.
• Access Control Appropriate for government spaces, managed conference rooms, and shared facilities.

Typical Applications

• Government and secure facility conference rooms requiring keyed screen control
• Managed corporate conference rooms
• Any Da-Lite 110V motorized screen installation where unauthorized operation must be restricted
• Training rooms and shared commercial meeting spaces

Technical Specifications

Frequently Asked Questions

Q: What is the difference between the 74490 (110V) and the 40973 (low voltage) control systems?

A: The 74490 operates at 110V line voltage and is compatible with Da-Lite screens using 110V motors. The 40973 operates at low voltage for screens with low-voltage motor control. Verify your screen motor type before ordering the correct control accessory.

Q: Does this switch require a licensed electrician for installation?

A: Yes. The 74490 operates at 110V line voltage and must be installed by a licensed electrician per NEC and local electrical code requirements.

Q: Can I use this switch with a Crestron or AMX control system?

A: The 74490 is a standalone keyed wall switch, not a control system interface. For Crestron or AMX integration with a 110V screen, additional relay hardware is required. Contact Creation Networks for control system integration options.

Q: How many keys are included with the 74490?

A: Contact Creation Networks or Da-Lite directly for the number of keys included and key duplication options for the 74490.

Q: What warranty does Da-Lite provide?

A: Da-Lite products carry a limited warranty. Contact Creation Networks or Da-Lite for current warranty terms for the 74490.