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OTC Transmitters

WIRELESS DISCRETE TRANSMITTER

Battery-Powered Self-Contained Digital Signal Monitoring Solution

WT-DS1

HIGHLIGHTS

  • 2 discrete inputs (dry contact / NPN)
  • Up to a 10-year battery life
  • Advanced local LCD display interface
  • Self-contained, rugged design
  • Installs in minutes
  • IP66, -40 °C to 70 °C (-40 °F to 158 °F)
  • 900 MHz / 2.4 GHz / 868 MHz
  • Secure AES encryption
  • Class I, Division 1 (Zone 0)
  • Intrinsically Safe

2 Discrete/Digital Inputs

The OleumTech® OTC Wireless Discrete Transmitter features two discrete inputs for connecting to dry contact or open-drain output/NPN sources for notifying state changes. The digital inputs can be set for normally open or normally closed. The wireless transmitter can also report transition counts. The WT-DS1 utilizes an on-delay exception reporting method allowing users to set the debounce filter ranging from 20 ms to 2000 ms to help remove undesired state reporting due to signal noise or hysteresis. As a safety measure, regardless of state change, this device reports to the wireless gateway at a user-defined interval. This ultra-lower-power transmitter is powered by a replaceable battery pack that provides up to a 10-year life. The push button LCD interface allows for device configuration and instant access to process data.

Reliable, Scalable and Safe

The field-proven wireless transmitter communicates with an assigned wireless gateway within the OTC Wireless Sensor and I/O Network creating a highly scalable network, accommodating virtually any I/O requirement.

The OleumTech wireless transmitter is certified for use in Class I, Division 1 (Zone 0) hazardous locations. It is intrinsically safe, designed not to cause a spark, and can be serviced without being removed from a process.

This product is also available without a local display.

TECHNICAL SPECIFICATIONS

WIRELESS COMMUNICATIONS 
Radio Band∙ ISM Band (License-Free)
900 MHz / 915 MHz∙ FHSS, FSK, AES Encryption 256-bit (900 MHz), 128-bit (915 MHz)
2.4 GHz∙ DSSS, AES Encryption 128-bit
868 MHz∙ LBT-AFA, AES Encryption 128-bit
Bit Rate∙ 900/915 MHz: 9600 bps / 115.2 kbps; 2.4 GHz: 250 kbps; 868 MHz: 80 kpbs
Output Power (Max)∙ 900/915 MHz: 10 mW; 2.4 GHz: 63 mW; 868 MHz: 25mW
Receiving Sensitivity∙ 900/915 MHz: -110 dBm @ 9600 bps, -100 dBm @ 115.2 kbps
∙ 2.4 GHz: -101 dBm @ 250 kbps; 868 MHz: -106 dBm @ 80 kbps
RF Range∙ 900/915 MHz: Up to 7500 Feet / 1.4 Miles (2.3 km) with Clear Line of Sight
∙ 2.4 GHz: Up to 4.3 Miles (7 km) with Clear Line of Sight
∙ 868 MHz: Up to 5.2 Miles (8.4 km) with Clear Line of Sight
HARDWARE FEATURES 
Device Functionality∙ Wireless Transmitter with Discrete Inputs
Embedded Controller∙ Ultra-Low Power RISC Microcontroller with Internal FLASH (Field Upgradeable)
Configuration∙ Standard RS232 Serial / BreeZ® Software for PC or LCD Interface
Inputs∙ 2 Discrete Inputs for Dry Contact or Open-Drain Output/NPN Devices
Power Source∙ Self-Contained, Internal 3.6 Vdc Lithium Battery
Internal Battery Life∙ Up to 10 Years, Based on User Defined Reporting Intervals
Local LCD Display∙ 32-Character Display (16x2 Lines) with 4 Function Keys + Read Button
Instant Displayable Read∙ Discrete Input 1 & 2 / Battery Voltage / RF Status
Local Configuration∙ Integral LCD with Four Push Button Interface
Device Diagnostics∙ Health Tags: Battery Voltage, Received Signal Strength Indication (RSSI), RF Refresh, RF Timeout
CERTIFICATIONS & COMPLIANCE 
EMC/EMI∙ FCC Part 15 (USA), IC ICES-003 (Canada), ACMA (Australia)
∙ AS/NZS CISPR 32 (Australia), EN55032 & EN55024 (EU)
Safety∙ Class I, Division 1, Groups A, B, C, D T3C; Ex ia IIC T3
∙ Class I, Zone 0; AEx ia IIC T3
∙ ATEX: Sira 13ATEX2142X; Ex ia IIC T3 Ga; II 1 G
∙ IECEx: SIR 13.0054X; Ex ia IIC T3 Ga
GENERAL SPECIFICATIONS 
Operating Conditions∙ Ambient Temperature (Class I, Division 1 / Zone 0): -40 °C to 70 °C (-40 °F to 158 °F)
∙ LCD Screen -20 °C to 70 °C (-4 °F to 158 °F)
∙ Ambient Temperature (Non-Hazardous Applications): -40 °C to 80 °C (-40 °F to 176 °F)
∙ LCD Screen -20 °C to 70 °C (-4 °F to 158 °F)
∙ Humidity: 0 to 99 %, Non-Condensing
Warranty∙ 2-Year Parts and Labor
Country of Origin∙ USA
ORDERING INFORMATION 
Model Numbers∙ WT-0900-DS1, WT-0915-DS1, WT-2400-DS1, WT-0868-DS1
Wirelessly Connects To∙ OTC Wireless Gateway
Configuration Cable∙ SX1000-CC2, 20-ft All-in-One Configuration Cable
Replacement Battery∙ Use OleumTech SX1000-BP3 Only