Meet Riotech’s DTMF

• Built-in Isolation – The DTMF Box incorporates an AREMA compliant DC-DC converter to isolate the radio from the powering battery

• Screen and User Interface – Easy to use interface allows users to change any of the operating parameters of the RT-DTMF. Parameters include radio frequency, radio transmit power, activation / deactivation codes, audio responses, channel timeout values, channel output polarities, and more!

• Optional Expansion Serial Port – Use this to interface with external devices such as the RioTech Remote Monitoring Device (RMD) to record all DTMF radio traffic and activations of the RT-DTMF.

• 4 Controllable Circuits – The RT-DTMF supports 4 independent channels driving dry relay contacts to give remote control of up to 4 independent circuits. Each channel can be activated / deactivated via up to 8 digit codes and incorporates a selectable timeout to automatically deactivate upon timeout.

• Built-in Microphone & Speaker – Key up and communicate over the radio network using the RT-DTMF’s built-in microphone.

• Status LEDs – Status LEDs indicate unit health, faults, radio channel active, DTMF tone received, on board PTT, audio chip playback, and channel statuses.

• Audio Confirmation Responses – The user selectable audio confirmation responses enable the RT-DTMF to key up the radio and reply with a verbal response to confirm the RT-DTMF has made a state change. The RT-DTMF can respond when channels activate, deactivate, or timeout. The DTMF Box will only respond whenever there is no active traffic on the radio. Build a custom audio response via the user interface and preprogrammed audio files, or load custom recorded audio files for a more customized audio response.

• Fault Sensing – Output sensing on control relays to detect faulted relay contacts.

Key Features

Radio

• VHF 136—174 MHz

• UHF 400—470 MHz (Optional)

• 6 Watt Radio

• BNC Style Connector for Antenna

Mounting Options

• Shelf Mount

• B2 Relay Rack Mount

Input Power

• 9—36 V dc

• Internal 3kVdc isolated power supply

Connectivity

• USB Port for settings, and firmware uploading

• 5 KV dc isolated RS-485 serial port

Interface

• Radio: -30° to 60° C

• Unit Components: -40°to 85°C