Signal-Tech 38834 SBLF718W-C887R/120-277VAC "QUIET MEETING IN PROGRESS" Indoor LED Backlit Sign

Key Facts

• Product type: Indoor LED backlit message sign (SBLF Series)
• Message: “QUIET MEETING IN PROGRESS”
• Display format: Single-sided face
• Readability: Message remains viewable when the sign is off; illumination adds emphasis and improves low-light visibility
• Input voltage: 120–277 VAC
• Construction: Corrosion-resistant extruded aluminum cabinet
• Mounting: Ships with Lift’N Shift back for wall mounting; ceiling, post, and wall-projection mount options available
• Control: Can be controlled by a switch or third-party relay (switch sold separately)
• Listings: UL/cUL Listed

Overview

The Signal-Tech 38834 SBLF Series “QUIET MEETING IN PROGRESS” indoor LED backlit sign is a single-sided, professional room-status indicator designed for clear communication in offices, schools, and facility environments. The block-style legend is readable without illumination, and the LED backlighting can be activated to add emphasis or improve visibility in low light.

Built for dependable long-term operation, the sign is engineered with a solid-state circuit board and switch-mode power supply to support extended LED life, making it a practical choice for conference rooms, training areas, and quiet zones where consistent messaging matters.

Features

• Block-style message is readable without illumination
• Message remains viewable when off; illuminate for emphasis or low-light readability
• Solid-state circuit board and switch-mode power supply for maximum LED life
• Corrosion-resistant, extruded aluminum cabinet
• Ships with Lift’N Shift back for wall mounting
• Ceiling, post, and wall-projection mountings are available
• Standard cabinet finish is Duranodic Bronze; custom paint finishes available
• Control via switch or third-party relay (control switch sold separately)
• UL/cUL Listed

Technical Specifications

• Manufacturer: Signal-Tech
• Model: 38834
• Series: SBLF
• Message: “QUIET MEETING IN PROGRESS”
• Display format: Single-sided face
• Power: 120–277 VAC
• Illumination: LED backlit
• Electronics: Solid-state circuit board; switch-mode power supply
• Cabinet material: Extruded aluminum (corrosion-resistant)
• Standard finish: Duranodic Bronze
• Mounting (included): Lift’N Shift back for wall mounting
• Mounting (optional): Ceiling, post, and wall-projection mountings available
• Control options: Switch control or third-party relay (switch sold separately)
• Certifications/Listings: UL/cUL Listed

Compatibility

• Compatible with standard on/off switching for sign activation
• Can be integrated with third-party relay control systems for facility automation workflows

Use Cases

• Conference rooms and meeting spaces
• Training rooms and classrooms
• Quiet zones in offices, labs, and technical facilities
• Facility wayfinding and room-status communication for professional environments

What’s Included

• Signal-Tech indoor LED backlit sign with “QUIET MEETING IN PROGRESS” message
• Lift’N Shift back for wall mounting

Installation Notes

• Designed for wall mounting using the included Lift’N Shift back
• Optional ceiling, post, and wall-projection mounting configurations are available
• Control switch is not included and can be purchased separately if required

Related Standards/Compliance

• UL/cUL Listed

Category FAQs

Is this sign double-sided?

No. This model is a single-sided sign. If you need a double-sided configuration, contact us with your mounting requirement and voltage so we can help identify the correct option.

Is the message visible when the sign is off?

Yes. The block-style message is readable without illumination, and the LED backlight can be activated to add emphasis or improve visibility in low light.

How is the sign controlled?

The sign can be controlled by a switch or by a third-party relay. A control switch is sold separately.

What mounting method is included?

The sign ships with a Lift’N Shift back for wall mounting. Ceiling, post, and wall-projection mountings are available as options.

What power input does it require?

This model is rated for 120–277 VAC input.

Is it certified/listed?

Yes. It is UL/cUL Listed.