• Intelligent Automation Grid: Delivers precise automated control over auxiliary doors, damp ventilation fans, and exit lighting.
• Advanced System Monitoring: Utilizes an addressable internal microprocessor for highly accurate real-time panel supervision.
• Versatile Flush Assembly: Compact in-wall design built to fit inside standard electrical back boxes seamlessly.
• Integrated Loop Security: Maintains continuous network stability using two built-in short-circuit line isolators.
• Certified German Engineering: Fully VdS Approved and EN 54-18 compliant for critical public infrastructure safety.
The Bosch FLM-420-RLV1-E Series Addressable Low Voltage relay interface module represents the absolute highest standard of European automation safety engineering. Engineered by Bosch in Germany and manufactured to robust quality parameters in China, the Bosch FLM-420-RLV1-E delivers uncompromising life-safety protection.
This specialized Bosch FLM-420-RLV1-E in-built module is engineered to command external ancillary equipment networks when triggered by your fire alarm panel. By leveraging an ultra-stable low voltage change-over contact relay, the Bosch FLM-420-RLV1-E drives emergency systems safely without drop-out failures.
| Model Assignment | FLM-420-RLV1-E (Low Voltage Flush-Mount Single Relay Module) |
| Manufacturer Brand | BOSCH Security and Safety Systems |
| Country of Origin | Germany (Engineered) / China (Manufactured) |
| Compliance Approvals | VdS Approved, CE Certified, EN 54-18 Compliant |
| Network Parameters | Addressable Loop Interface (LSN improved version technology infrastructure) |
| LSN Operating Voltage | 15 V DC to 33 V DC data wire operational window range |
| LSN Current Consumption | Highly efficient 1.75 mA maximum current draw loading from the loop line |
| Relay Output Configuration | 1 Form C Voltage-Free Relay (Selectable Normally Open or Closed Contacts) |
| In-Built Switching Current | Up to 1 A at 30 V DC continuous resistive switching capabilities |
| Alternating Switching Limit | Supports maximum AC low-voltage command runs up to 0.5 A at 42.4 V AC |
| Enclosure Build Material | High-Quality Rigid Plastic Shell, White Finish Profile |
| Physical Core Dimensions | 89 mm x 45 mm x 25 mm slim flush dimensions (3.5 x 1.8 x 1.0 inches) |
| Box Integration Standards | Designed to slot directly into electrical back boxes matching EN 60670 |
| Environmental Boundaries | -20°C to +55°C operating limits; Max 96% RH non-condensing moisture walls |
| Onboard Address Dials | Integrated internal dip switches supporting manual or automatic mapping |
Verify switching voltage parameters, loop power limits, and in-wall electrical back box constraints before connecting your Bosch FLM-420-RLV1-E auxiliary loop cables.
📥 Download Official Bosch FLM-420-RLV1-E Technical Submittal Datasheet
The core electronic advantage of integrating the comprehensive Bosch FLM-420-RLV1-E addressable relay module is its intelligent macroswitch automation layer profile. The optimized low-power circuit design of the Bosch FLM-420-RLV1-E consumes an ultra-efficient standby current of just 1.75 mA from your loop line. Furthermore, the premium engineering of the Bosch FLM-420-RLV1-E delivers extensive layout flexibility across complex building upgrades.
Installers can use the internal dip switches on the Bosch FLM-420-RLV1-E board to establish manual node maps up to 254 elements. Alternatively, keeping the selectors of the Bosch FLM-420-RLV1-E clear allows the systems to handle full automatic software mapping routines.
To verify standard compliance profiles and secure reference validation link properties, browse the technical parameters on the main Bosch Security and Safety Systems Hub.
Q1: What is the primary function of the Bosch FLM-420-RLV1-E relay module?
A: The module provides an addressable voltage-free contact relay output to control external systems like fire doors, ventilation fans, and escape lights during emergencies.
Q2: What is the maximum switching current capacity for the built-in relay variant?
A: The flush-mount in-built relay supports loads up to 1 A at 30 V DC, or up to 0.5 A at 42.4 V AC for low-voltage auxiliary circuitry.
Q3: How do technicians configure the network node loop address on this interface device?
A: The module features an integrated set of internal dip switches that allow installers to perform quick manual setting or full automatic address allocation routines.
Q4: Can the Bosch FLM-420-RLV1-E be fitted inside traditional electrical junction housings?
A: Yes, absolutely. The compact, slim casing is specially engineered to fit inside standard flush-mount electrical back boxes matching the EN 60670 standard profile.
Q5: Does a localized branch cable fault disable the other devices wired onto the same data loop?
A: No. Dual built-in line isolators preserve full LSN loop communication functions, isolating local short circuits or line wire cuts without taking down the wider network.
Q6: Is this addressable output component certified to meet international life-safety norms?
A: Yes. The module is fully VdS Approved and carries official certification under the European EN 54-18 standard for fire detection input/output devices.
Q7: What is the baseline electrical power load drawn from the LSN panel network line?
A: The module draws an ultra-low operating current consumption of less than 1.75 mA, allowing you to maximize the number of addressable nodes per loop run.
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