I/O Modules

I/O Modules

Scalable Input/Output expansion modules for flexible building automation system integration.

Input/Output Expansion Modules

Tongfang I/O modules provide flexible expansion capabilities for building automation systems, allowing scalable integration of sensors, actuators, and field devices with universal point configuration.

Universal Points

Software-configurable AI/DI/AO/DO points for maximum flexibility and reduced inventory costs.

Hot-Swappable

Modules can be replaced without system shutdown, ensuring continuous building operation.

I/O Module Types

Digital Input

DI Series Modules

Monitor dry contacts, switches, and digital status signals with optical isolation.

Channels
8, 16, or 32 isolated channels
Input Voltage
24V DC (10-30V range)
Isolation
1500V optical isolation
Applications
Door contacts, pump status, alarm signals
Analog Input

AI Series Modules

Precision measurement of temperature, pressure, humidity, and current/voltage signals.

Channels
8 or 16 universal channels
Resolution
16-bit ADC, 0.1% accuracy
Signal Types
0-10V, 4-20mA, RTD, thermocouple
Applications
Temperature sensors, pressure transducers
Digital Output

DO Series Modules

Control relays, contactors, and actuators with configurable pulse-width modulation.

Channels
8 or 16 relay outputs
Contact Rating
5A @ 250V AC, 5A @ 30V DC
Switching
Form C (SPDT) relay contacts
Applications
Motor starters, valve control, lighting

Technical Specifications

Communication
RS-485 Modbus RTU, BACnet MS/TP
Power Supply
24V DC ±20%, with reverse polarity protection
Operating Temperature
-10°C to +60°C (14°F to 140°F)
Humidity Range
5% to 95% RH non-condensing
Mounting
DIN-rail mounting (35mm)
LED Indicators
Per-channel status, communication, power
Certifications
CE, UL 508, RoHS, ISO 9001

Product Gallery

Quick Info

Product Line
TF-IO Series
Model Range
TF-DI, TF-AI, TF-DO, TF-AO
Warranty
3 Years Extended Warranty
Lead Time
1-2 Weeks
Support
24/7 Technical Support

Downloads & Documentation

Product Catalog

Complete I/O Module Series

Download
Wiring Diagrams

Connection & Installation Guide

Download
Configuration Guide

Module Setup & Programming

Download

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