MTS-8DI: 8 Channel Digital Input Module

for Modular Telemetry System                                     specsheet


MTS-8DI Features:

  • 8 Digital Inputs
  • Inputs Individually Selectable as Dry or Wet Contacts
  • Input Status Indication
  • Adjustable On/Off Delay For Hysteresis
  • Approvals: ETL 3098704: Class I & II, Div. 2 and Class III, Div. 1&2; UL 508; CSA-C22.2 No. 14-95 

MTS System Features:

  • Bi-directional Communication using License-free 902-928 MHz Radio Band
  • Spread-Spectrum Radio Technology Provides Reliable Communication
  • Modular Design Provides Maximum Flexibility
  • Analog and Digital I/O Modules
  • Expandable to 99 I/O Modules
  • Point-to-Point or Host-to-Multipoint Topologies
  • No Programming Required - Easy to Configure
  • Microprocessor Controlled for High Accuracy
  • Power: 24 VDC, Solar Power, and Others Available
  • Easy Field Installation with Integrated Power/Data Bus


The MTS-8DI is an 8 channel digital input module. It provides digital input capability for an MTS series telemetry system. The MTS-8DI communicates with its counterpart, the MTS-8DO digital output module. Each input can be configured as a dry or wet contact input. An adjustable ON/OFF delay can be invoked to provide hysteresis. The input status of each channel is indicated individually. While an input is in its ON or OFF delay mode the indicator flashes.

Deployment and installation is as simple as plugging the needed I/O modules into the communications module and assigning unique module IDís. Power and communication for the modules are provided through an integral bus.



  • Inputs: Dry Contact (excited with 24V from Module), DC Signal (0-24VDC max.)
  • Power Consumption: 0.5VA (Inputs Open), 5VA (Inputs Closed)
  • Input Impedance: 1200 ohms
  • Reverse Polarity Protection: Yes

Other Modules

  • MTS-4DI - 4-Channel Digital Input
  • MTS-8DO - 8-Channel Digital Output
  • MTS-4AO - 4-Channel Analog Output
  • MTS-4DIO - 4-Channel Digital Input/output
  • MTS-RAD - Wireless Communication
  • MTS-PWR - Power Distribution
  • MTS-CEL - Cellular Communications Module
  • MTS-NET - Ethernet Communications Module




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