Aritech IO2034NC Addressable 4-Input 4-Output Module

1. Product Name: Aritech IO2034NC Addressable 4-Input 4-Output Module

2. Description:

What Is the Aritech IO2034NC Addressable 4-Input 4-Output Module?

The Aritech IO2034NC is an interface module designed for 2000 Series addressable fire detection systems. It has 4 monitored inputs and 4 magnetic latching relay outputs. It is loop-powered and supplied in an enclosure suitable for surface mounting. All inputs and outputs can be programmed independently via a single loop address.

Operating Principle

The module operates on the fire panel loop, monitoring the status of external contacts and independently switching the relay outputs in response to commands from the panel. The inputs are monitored for normal, active, open-circuit and short-circuit conditions, with all states reported to the panel. Each output is provided by a magnetic latching relay with a volt-free changeover contact. The relays consume no additional power in either the active or inactive state, keeping current consumption very low even while the module is active. The relay positions are retained in the event of a power failure.

Role in Fire Detection Systems

In a fire system, scenario control is as important as detection. The IO2034NC passes signals from external devices such as sprinkler flow switches and door contacts to the panel, while its relay outputs can be used to release fire doors, shut down ventilation and air-conditioning units, or control lifts. Regardless of how many inputs or outputs are used, the module occupies just one loop address, making efficient use of loop capacity. It is compatible with Aritech 2000/1200 and 2X Series fire panels.

Why Choose It?

• 8 points on a single address: 4 inputs and 4 outputs can be programmed independently using a single loop address.
• Full line monitoring: Inputs are monitored for open- and short-circuit conditions.
• Latching relays: Relay positions are retained in the event of a power failure; NO or NC operation can be selected.
• Loop-powered: No external power supply is required, reducing installation costs.
• Easy addressing: Set the numeric address directly using two rotary switches; certified to EN54 and CPR.

Installation and Commissioning

The IO2034NC is surface-mounted on a wall and connected to the panel using a 2-core loop cable. Set the address directly as a number from 1 to 128 using the two rotary switches; no binary or hexadecimal conversion is required. A 150 kΩ end-of-line resistor must be connected at the end of each input line, including unused inputs; an additional 33 kΩ resistor is required for full open- and short-circuit monitoring. Relay outputs should be used for loads rated up to 2 A at 30 VDC. Input and output functions are programmed via the panel during commissioning.

Technical Specifications

• Status indication: LED
• Compatibility: Aritech 2000 series systems
• Addressing method: Rotary switch
• Address range: 1 – 128 (128 devices per loop)
• Power supply type: Loop-powered
• Operating voltage: 17–28 VDC
• Current consumption: Max. 350 µA (with 2 input in use) / max. 420 µA (with 4 inputs in use)
• Line resistance: <100 Ω
• Number of inputs: 4
• Input type: Monitored
• Input states: Active, Normal, Open circuit, Short circuit
• Additional resistor for fully monitored input (optional): 33 kΩ, ¼ W, 5%
• End-of-line resistor: 150 kΩ, ¼ W, 5% (required on every input, including unused inputs)
• Number of outputs: 4
• Output type and rating: Relay (NC/COM/NO), max. 2 A, max. 30 VDC, max. 60 W switching power
• Dimensions: 175 x 124 x 51 mm
• Net weight: 100 g
• Colour: White
• Mounting type: Wall-mounted
• Material: Plastic
• Cable: 2-core (loop)
• Operating temperature: −10 to +55 °C
• Storage temperature: −20 to +60 °C
• Relative humidity: 10%–95% (non-condensing)
• Environment / protection rating: Indoor, IP40
• Compliance: CE, REACH, RoHS 3, WEEE
• Certification / Standard: CPR, EN54-18

Applications

• Fire damper and ventilation control
• Release of fire door hold-open devices
• Lift and escalator scenarios
• Sprinkler flow and valve monitoring
• Signal transmission to the building management system
• Equipment shutdown in industrial facilities

Compatible Products

IO2034NC works with fire panels, particularly 2X-A series panels using the Aritech 2000 series protocol, as well as 2000/1200 and 2X series fire panels. Within the same family, the IU2050NC input module is suitable for single-input applications, the IU2080NC output module for monitored sounder circuits, and the IU2055NC zone module for integrating conventional zones. It can be used with the ISM-95 isolator module for loop segmentation.

Frequently Asked Questions

How many loop addresses does the IO2034NC occupy? All four inputs and four outputs share a single loop address.

What happens to the relays when power is lost? The magnetic latching relays retain their last positions and consume no additional power except when changing state.

Is an external power supply required? The module itself is loop-powered. As the relay contacts are volt-free, the controlled equipment uses its own power supply.

At Narstek, we provide project support for fire scenario design, module placement and commissioning of Aritech 2000 Series systems. Contact us to request a quote for the IO2034NC.