This document serves as the User Manual for the COMMAX DR-24ML and DR-nXM series of products, which are components of the COMMAX SmartHome & Security system. The manual provides essential information for the safe and correct operation, installation, and maintenance of these devices.
Function Description
The DR-24ML is designed as a master unit for calling and communicating with residents in a household. It functions as an outdoor station, allowing visitors to initiate calls to individual residences. The DR-nXM series (DR-26XM, DR-28XM, DR-30XM, DR-32XM) are extension units that work in conjunction with the DR-24ML to increase the number of households that can be called. These extension units are not standalone master units but rather expand the capacity of the DR-24ML.
When a call button on either the DR-24ML or an attached DR-nXM unit is pressed, a calling sound rings, and communication can be established with the resident who answers the call. The system supports hands-free communication.
Important Technical Specifications
The DR-24ML and DR-nXM models share several key specifications:
- Model Numbers: DR-24ML, DR-nXM (including DR-26XM, DR-28XM, DR-30XM, DR-32XM).
- Power Source: DC12V, 1.5A.
- Wiring: The system utilizes a common 3-wire setup plus an individual 1-wire connection. Specifically, it requires [3 wires: 1,2,3] + [1 wire: L1].
- Communication Type: Hands-free.
- Operating Temperature: -10°C (tested up to -40°C) to +50°C.
- Dimensions (W x H x D): 130mm x 405mm x 50mm.
- Communication Distance:
- With a wire diameter of Φ 0.5, the maximum distance is 30 meters.
- With a wire diameter of Φ 0.65, the maximum distance is 50 meters.
The DR-nXM models differ in the number of call buttons and corresponding connectors:
- DR-26XM: 2P(1EA) connector.
- DR-28XM: 4P(1EA) connector.
- DR-30XM: 6P(1EA) connector.
- DR-32XM: 8P(1EA) connector.
Usage Features
The DR-24ML and DR-nXM units are designed for flush mounting on a wall. The manual highlights the following usage aspects:
- Call Button: Each unit features multiple call buttons, allowing visitors to select and call a specific residence. The DR-24ML has 24 call buttons, while the DR-nXM units extend this capacity.
- Speaker: Integrated speaker for audio output during communication.
- C-MIC (Condenser Microphone): Integrated microphone for audio input during communication.
- Extension Capability: The DR-nXM units are specifically designed to extend the number of households the DR-24ML can serve. This modular design allows for scalability based on the building's requirements.
- Simple Operation: The process involves pressing a call button and then engaging in hands-free conversation once the resident answers.
Maintenance Features
The manual emphasizes several important safeguards and precautions for the maintenance and longevity of the device:
- Safety Precautions: The manual includes symbols to alert users to "dangerous Voltage" and important operating/maintenance instructions. It explicitly states that the unit should not be exposed to rain or moisture to prevent fire or shock hazards.
- Risk of Electric Shock: Users are warned not to remove the cover or back of the unit, as there are no user-serviceable parts inside. All servicing should be referred to qualified service personnel.
- Damage Requiring Service: The equipment requires servicing by qualified personnel under specific conditions, including:
- When the power is damaged.
- If liquid has been spilled or objects have fallen into the unit.
- If the equipment has been exposed to rain or water.
- If the equipment has been dropped or otherwise damaged.
- If the equipment exhibits a distinct change in performance.
- Water and Moisture Avoidance: The product should not be used near water sources such as bathtubs, wash bowls, kitchen sinks, laundry tubs, wet basements, or swimming pools.
- Accessories: Only mounting accessories recommended by the manufacturer should be used to prevent the product from falling and causing injury or damage.
- Object and Liquid Entry: Users are warned against pushing objects into the product's openings or spilling any liquid on it, as this could lead to electric shock or fire.
- Lightning Protection: For protection against lightning storms and power-line surges, it is recommended to unplug the unit from the wall outlet and disconnect other systems. Investing in power-line, telephone-line, RF cable, and actuator/polarization surge protectors is advised, especially in areas prone to lightning.
- Part List: The manual includes a part list, detailing components such as product fix screws, various connectors (2P, 4P, 6P, 8P, 12P), and the manual itself, which can be useful for identifying and replacing parts if necessary by qualified personnel.
- Wiring Sequence: Users are explicitly instructed to pay careful attention to the wiring sequence during installation to ensure correct functionality and safety.
The manual serves as a comprehensive guide for ensuring the safe and effective deployment and operation of the COMMAX DR-24ML and DR-nXM intercom systems.
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