Secutron Low Frequency Sounder Base MRI-4003-LF for MRI-4000 Series Detectors, 520 Hz
Sound the alarm at the right pitch.
A detector base that adds a 520 Hz low frequency sounder to MRI-4000 Series detectors, built to meet NFPA 72 low frequency sounder codes in addressable fire alarm installations.
Your detector needs to be heard, not just seen.
Fire detection in commercial and institutional buildings depends on alarm tones that meet code. A sounder base puts the alarm right at the detector.
Built for code-compliant alarms
The MRI-4003-LF combines a code-minded alarm tone with a base that works for new builds and replacements.
Comprehensive compliance
Fully meets NFPA 72 for low frequency sounder codes.
Low frequency alarm tone
The sounder tone this base delivers for MRI-4000 Series detectors.
Optimal alarm tone
Delivers a 520 Hz low frequency tone from the detector base.
Built-in sounding
Adds alarm sounding capability to all MRI-4000 detectors.
Cost and space efficiency
Combines detector base and sounder in one device instead of separate units.
- Fast shippingUS and Canada
- 30-day returnsOn eligible items
- Quotes & sourcingJust ask
Everything you need to know.
| Brand | Secutron |
| Model | MRI-4003-LF |
| Product Type | Detector Base |
| Product Series | 400 |
| Tone | 520 Hz low frequency |
| Standard | NFPA 72 low frequency sounder codes |
| Compatible Detectors | MRI-4000 Series |
| Shipping Weight | 1 lb |
| Typical Use | Commercial and institutional fire detection |
| Typical Use | Addressable fire alarm systems |
Secutron Low Frequency Sounder Base MRI-4003-LF for MRI-4000 Series Detectors, 520 Hz
The Secutron MRI-4003-LF Low Frequency Sounder Base for MRI-4000 Series Detectors (520 Hz) is a detector sounder base for professional installation. It is made for installers, integrators and facility teams who need a dependable replacement or new-build part that matches the original part number.
Key Features
- Comprehensive Compliance Fully meets NFPA 72 for low frequency sounder codes
- Optimal Alarm Tone
- Built-in alarm sounding capability for all MRI-4000 detectors
- Cost and Space efficiency
- Configurable Operation
Specifications
- Brand: Secutron
- Model: MRI-4003-LF
- Product Type: Detector Base
- Shipping weight: 1 lb
Typical Uses
- Fire detection in commercial and institutional buildings
- Addressable fire alarm system installations
Please confirm that the MRI-4003-LF matches your system, compatible devices, mounting and finish requirements before ordering. Contact us with the model of your existing equipment if you need help checking compatibility.
Need help with compatibility?
Looking for a manufacturer part number, compatible replacement, or quantity order? Contact Raztechs for sourcing and quote support.
Secutron MRI-4003-LF, ready to order.
- Product Type: Detector Base
- Product Series: 400
- Tone: 520 Hz low frequency
- Standard: NFPA 72 low frequency sounder codes
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