Bosch FLM-420-RLV1-E Low-Voltage Relay Interface Module Price in Bangladesh

Description

Product Name: Bosch FLM-420-RLV1-E Low-Voltage Relay Interface Module Price in Bangladesh

Manufacturer: Bosch Building Technologies

Product Overview

The Bosch FLM-420-RLV1-E operates as an addressable low-voltage relay interface module engineered for Bosch fire alarm control panels (such as the FPA-5000 and FPA-1200 series). Furthermore, it provides a changeover contact relay (Form C: NO/NC/COM) to deliver a potential-free output contact for controlling low-voltage auxiliary systems.

In addition, the module connects directly to the 2-wire Local Security Network (LSN) loop, drawing operating power directly from the communication line. Specifically, it triggers external equipment such as ventilation shut-offs, fire door retainers, access control overrides, and emergency signaling systems. Designed as an in-built variant, it mounts inside standard electrical device boxes or directly within target equipment housings for space-saving deployment.

Key Benefits

• Loop-Powered Addressability: Connects directly to the 2-wire LSN loop without requiring external 24 VDC auxiliary power supplies.

• Integrated Line Isolation: Features two integrated line isolators to maintain LSN loop integrity in the event of a wire break or short circuit.

• Addressing: 8 DIP switches; supports automatic addressing (setting 0), manual addressing (settings 1–254) in LSN improved mode, and classic LSN mode (setting 255; address range up to 127).

• Compact In-Built Profile: Fits into standard EN 60670 electrical wall boxes or directly inside controlled device enclosures.

Key Features & Technologies

• Form C Output Relay: Provides potential-free changeover contacts (Normally Open, Normally Closed, and Common).

• LSN Improved Technology: Accommodates flexible loop topologies—including stub lines and T-tapping—with up to 254 elements per loop.

• Low Current Draw: Operates with minimal current consumption directly off the LSN bus line.

• Integrated Line Isolators: Helps maintain LSN loop operation during a short circuit or line interruption and sends a fault indication to the fire panel.

• Unshielded Cable Support: Operates reliably over standard unshielded fire alarm cabling configurations.

Technical Specifications Overview

• Brand: Bosch Building Technologies

• Model: FLM-420-RLV1-E

• Product Type: Low-Voltage Relay Interface Module (In-Built Type)

• LSN Operating Voltage: 15 VDC to 33 VDC

• Maximum LSN Current Consumption: Approximately 1.75 mA

• Relay Contact Type: 1 Changeover Contact (Form C: NC / COM / NO)

• Maximum Switching Capacity (In-Built Type): 1 A at 30 VDC / 0.5 A at 42.4 VAC (Resistive Load)

• Minimum Activation Time: > 20 ms for connected devices

• Addressing: 8 DIP switches; supports automatic and manual addressing in LSN improved mode and classic LSN mode, subject to panel configuration.

• Operating Temperature: -20°C to +55°C (-4°F to 131°F)

• Relative Humidity: < 96% RH (non-condensing)

• Ingress Protection Rating: IP30

• Dimensions: Approximately 50 mm diameter × 22 mm height

• Weight: Approximately 35 g unpackaged / 130 g packaged

• Agency Compliance: EN 54-17:2005 (Isolators), EN 54-18:2005 (Input/Output Devices), CE, VdS

Conclusion

The Bosch FLM-420-RLV1-E Low-Voltage Relay Module provides addressable potential-free contact control across Bosch LSN fire alarm networks. Moreover, its integrated dual isolators, loop-powered design, DIP switch addressing, and compact in-built form factor support reliable auxiliary system activation in commercial life safety installations.

Contact Us

For pricing, technical specifications, stock availability, and purchasing inquiries regarding Bosch fire alarm modules in Bangladesh, get in touch with our team:

• Phone: +8801737118246

• Email: [email protected]