Quantec RF Integrity ‘Heartbeat’ Transmitter
£88.49 (inc VAT: £106.19)
Summary
The QT421 is a monitored RF integrity transmitter designed to work seamlessly with Quantec’s QT422RX Radio Receivers. This device plays a crucial role in maintaining the reliability of wireless fire and security installations by continuously monitoring RF coverage.
The transmitter sends periodic RF test transmissions to receivers configured with the same RF group address, helping ensure that RF integrity and site coverage are maintained at all times. If a transmission is not received by the controller, the system flags a fault, providing early warning of potential communication issues.
Typically installed at strategic points throughout an installation, we recommend deploying at least one RF Integrity Transmitter per Radio Receiver. The device mounts conveniently on a standard 25mm UK single gang back box and draws its power from the Quantec network. Unlike other Quantec devices, the QT421 is not an addressable device as it is monitored directly by the radio receiver(s) it is configured to work with.
Features
- Ensures RF integrity and site coverage through periodic test transmissions
- Compatible with QT422RX Radio Receivers
- Automatic fault flagging at Quantec Controller if transmission not received
- RF Group ID dipswitch for easy configuration
- Heartbeat LED indicator for visual confirmation of test transmissions
- Powered from Quantec network with no separate power supply required
- Non-addressable device monitored by radio receivers
- Mountable on standard 25mm UK single gang back box
- Compact dimensions (87W x 87H x 35D mm)
- Plastic construction
- Operates in temperatures from -5°C to +40°C
FAQ
How does the QT421 help maintain system reliability?
The QT421 sends periodic RF test transmissions to configured radio receivers, ensuring continuous monitoring of RF coverage. If a transmission is not received, the Quantec Controller flags a fault, alerting you to potential communication issues before they affect system performance.
How many RF Integrity Transmitters do I need for my installation?
We recommend installing at least one RF Integrity Transmitter per Radio Receiver. For optimal coverage monitoring, position transmitters at strategic points throughout your installation to ensure comprehensive RF integrity testing.
Is the QT421 an addressable device?
No, the QT421 is not an addressable device. Unlike other Quantec network devices, it is monitored directly by the radio receiver(s) it is configured to work with using the RF Group ID setting.
How is the QT421 powered?
The QT421 is powered directly from the Quantec network, eliminating the need for a separate power supply. Simply connect it to the Net+ and Net- terminals.
How do I configure the QT421 to work with my radio receivers?
Use the RF Group ID dipswitch on the device to set the same RF Group ID as the radio receiver(s) you intend to use it with. The Heartbeat LED will flash on test transmission to confirm operation.
Can the QT421 be mounted on standard UK back boxes?
Yes, the QT421 is designed to mount on a standard 25mm UK single gang back box, either flush or surface mounted.
Specifications
- Compatibility: Designed to work with QT422RX Radio Receivers
- Power Requirements: Powered from the Quantec network
- Quiescent Current: TBC
- Indicators: Heartbeat LED (flashes on test transmission)
- Controls: RF Group ID dipswitch allows the transmitter to be set up with the same RF Group ID as the radio receiver(s) you intend to use it with
- Connections: Net+, Net-
- Product Dimensions: 87W x 87H x 35D mm. Can be mounted on a standard UK 25mm single gang flush or surface back box
- Construction And Finish: Plastic
- IP Rating: TBC
- Weight: TBC
- Operating Conditions/Temperature: -5°C to +40°C. Max relative humidity: 95%
Downloads
- Datasheet (Adobe PDF)
Additional information
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