Zeta SMM/B | Special Mini Module (White) | Addressable Beam Detector Interface
£19.16 (inc VAT: £22.99)
Summary
The Zeta SMM/B Mini Zone Monitor is an intelligent interface module designed to integrate conventional detectors into addressable fire detection loops. Specifically engineered to work with Zeta’s auto-aligning beam detectors and other conventional devices, this module enables comprehensive monitoring and control of non-addressable equipment within modern addressable fire alarm systems, supporting up to 16 modules per loop for efficient zone management.
Featuring a compact white enclosure suitable for discreet installation, the SMM/B provides polarity-insensitive loop connections for simplified wiring while maintaining consistent positive loop orientation. The module’s zone output delivers up to 13mA capacity, sufficient to power and monitor conventional detectors while providing reliable alarm current detection of 13mA and quiescent current monitoring at 500µA when operating at 24V.
Configuration is straightforward through an 8-segment DIL switch offering 254 unique address settings, allowing precise identification of each monitored zone within the fire detection system. The module operates across a wide voltage range from 17V to 28V on the loop circuit, with zone output voltage maintained between loop voltage minus 1.7V, ensuring stable performance across varying system conditions and cable runs.
Features
- Compatible with Zeta addressable fire detection loops
- Controls and monitors conventional detector states
- Supports up to 16 modules per addressable loop
- Zone output capacity of 13mA maximum
- 8-segment DIL switch for address configuration
- 254 selectable addresses (1-254) for extensive zone coverage
- Polarity-insensitive loop connections for installation flexibility
- Dedicated zone output terminals for detector connection
- Wide operating voltage range from 17V to 28V on loop
- Zone output voltage of Vloop minus 1.7V
- Alarm current detection at 13mA
- Quiescent current monitoring at 500µA at 24V
- White enclosure for discreet installation
- Simple two-wire loop connection from panel
- Clear terminal labelling for Loop L1 and Loop L2 connections
- Suitable for Zeta auto-aligning beam detectors
- Compatible with conventional fire detection devices
- Enables addressable system integration of legacy equipment
FAQs
How many SMM/B Mini Zone Monitors can be connected to a single loop?
A maximum of 16 SMM/B Mini Zone Monitors can be connected to each addressable loop. This limitation ensures adequate power distribution and reliable communication across all connected modules while maintaining system performance. When designing multi-zone systems requiring more than 16 conventional detector zones, additional addressable loops must be utilized, with each loop supporting its own complement of up to 16 zone monitors for comprehensive coverage.
What is the current capacity of the zone output?
The SMM/B Mini Zone Monitor provides a zone output capacity of 13mA maximum, which is sufficient to power and monitor most conventional fire detectors including beam detectors, smoke detectors, and heat detectors. The module monitors for alarm conditions when current reaches 13mA, while quiescent (standby) current is monitored at 500µA when operating at 24V supply voltage. This current capacity must be considered when selecting compatible detectors to ensure the connected device operates within the module’s power delivery capabilities.
How do I set the address on the SMM/B Mini Zone Monitor?
Address configuration is accomplished using the 8-segment DIL switch located on the module. Each segment can be set to either “0” (ON position) or “1” (OFF position) using a small screwdriver or similar tool. The combination of these eight switches creates a binary code that determines the module’s address from 1 to 254. A comprehensive address chart is provided in the installation documentation showing the exact DIL switch positions required for each address number. It’s essential to ensure each module on the loop has a unique address to prevent communication conflicts.
Are the loop connections polarity sensitive?
No, both Loop L1 and Loop L2 connections are polarity insensitive, providing installation flexibility and reducing the risk of wiring errors during commissioning. However, for consistency and ease of troubleshooting, Zeta recommends maintaining Loop L2 as the positive connection throughout the installation. This standardized approach simplifies system maintenance and helps installation engineers quickly identify connection orientation when servicing multiple modules across the fire detection system.
What type of detectors can be connected to the SMM/B?
The SMM/B Mini Zone Monitor is specifically designed to interface conventional fire detectors to Zeta addressable loops, with particular compatibility for Zeta’s auto-aligning beam detectors. The module can also monitor and control other conventional detection devices including standard smoke detectors, heat detectors, and multi-sensor devices that operate within the 13mA current capacity. The zone output voltage (Vloop – 1.7V) and current capabilities must be verified against the connected detector’s specifications to ensure proper operation and reliable alarm detection.
Specifications
- Maximum Modules Per Loop: 16
- Zone Output Capacity: 13mA maximum
- Addressable Range: 1-254 (254 addresses available)
- Address Configuration: 8-segment DIL switch
- Power Voltage (Loop): 17V-28V
- Zone Output Voltage: Vloop – 1.7V
- Alarm Current: 13mA
- Quiescent Current: 500µA at 24V
- Loop Connection Polarity: Insensitive (L1 and L2)
- Colour: White
- Terminal Configuration: Loop L1, Loop L1, Loop L2, Loop L2, Zone Output +/-
- Compatible Systems: Zeta addressable fire detection loops
- Primary Application: Zeta auto-aligning beam detectors and conventional devices
- Installation Method: Surface mount
Downloads
- Installation Manual (Adobe PDF)
Additional information
| Weight | 0.5 kg |
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