WIRELESS DIGITAL I/O MODULE
Add Discrete I/O Points to Any OTC Sensor Network


WM-004
HIGHLIGHTS
- 6 programmable digital I/O channels
- Supports any mix of inputs and outputs
- Normally open/close, counts, pulsed modes
- 10 ms to 2000 ms debounce filter
- 1 Amp sink current for open-drain outputs
- Supports Over-the-Air (OTA) functionality for updating the device configuration (900 MHz only)
- -40 °C to 80 °C (-40 °F to 176 °F)
- 900 MHz / 915 MHz / 2.4 GHz / 868 MHz
- Secure AES encryption
- Class I, Division 2 (Zone 2)


Scalable I/O Solution
The OleumTech® OTC Wireless Digital I/O Module provides a quick and scalable solution for adding up to six digital I/O points to any OTC Sensor and I/O Network. Each digital channel can be programmed independently as inputs or outputs. Each channel can be setup as input, counter, output, or pulsed output. The Wireless Digital I/O Module communicates with an assigned wireless gateway in the network. This wireless device is certified for use in Class I, Division 2 (Zone 2) hazardous locations.
Robust Range, Advanced Networking
With the provided robust RF range, the Wireless Digital I/O Module can rescue stranded I/O points that was once economically not feasible. The Wireless Digital I/O Module can be added to the network as needed and its I/O points can be mapped to anywhere within the OTC Network creating an efficient, highly advanced system that is easy to create and manage.
TECHNICAL SPECIFICATIONS
WIRELESS COMMUNICATIONS | |
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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: 1000 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 40 Miles / 64 km with Clear Line of Sight (Gateway to Gateway or I/O Module) |
∙ 900/915 MHz: Up to 7500 Feet / 1.4 Miles / 2.3 km with Clear Line of Sight (Transmitter to Gateway) | |
∙ 2.4 GHz: Up to 4.3 Miles / 7 km with Clear Line of Sight (Gateway to Gateway) | |
∙ 868 MHz: Up to 5.2 Miles / 8.4 km with Clear Line of Sight (Gateway to Gateway) |
HARDWARE FEATURES | |
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Device Functionality | ∙ Wireless Digital Input / Output Module |
Embedded Controller | ∙ Ultra-Low Power RISC Microcontroller with Internal FLASH (Field Upgradeable) |
Configuration | ∙ Config / Debug Port - RS232 Slave Only (RJ-45) / BreeZ® Software for PC |
I/O Interfaces | ∙ 6 Programmable Digital (Discrete) Inputs and Outputs |
- Supports Mix of Inputs and Outputs | |
- 30 Vdc (Max) Input for All Channels | |
- 1 A Sink Current for Open-Drain Outputs | |
- Configurable Debounce Filter | |
Device Diagnostics | ∙ Health Tags: Supply Voltage, Received Signal Strength Indication (RSSI), RF Refresh, RF Timeout |
MECHANICAL SPECIFICATIONS | |
Dimensions | ∙ 3.8" (W) x 3" (H) x 1.4" (D) / 96.5 mm (W) x 76.2 mm (H) x 35.6 mm (D) |
Package Dimensions | ∙ 8" (W) x 6" (H) x 2.5" (D) / 203 mm (W) x 152 mm (H) x 63 mm (D) |
Weight | ∙ Net: 0.75 lbs / 0.3 kg; Packaging: 1 lbs / 0.4 kg |
Connection Fitting | ∙ DIN Rail or Direct Mount / Custom Enclosures Available |
ELECTRICAL SPECIFICATIONS | |
DC Power Input | ∙ 9-30 Vdc |
Average Power Input | ∙ 2 Watt |
900/915 MHz Pwr Cons. @ 12 V | ∙ @100 mW: Idle = 28 mA; Transmit = 124 mA | @1 Watt: Idle = 28 mA; Transmit = 252 mA |
900/915 MHz Pwr Cons. @ 24 V | ∙ @100 mW: Idle = 24 mA; Transmit = 80 mA; | @1 Watt: Idle = 24 mA; Transmit = 162 mA |
2.4 GHz Pwr Cons. @ 12 V | ∙ @25 mW: Idle = 22 mA; Transmit = 53 mA | @ 63 mW: Idle = 28 mA; Transmit = 68 mA |
2.4 GHz Pwr Cons. @ 24 V | ∙ @25 mW: Idle = 20 mA; Transmit = 39 mA | @ 63 mW: Idle = 20 mA; Transmit = 50 mA |
868 MHz Pwr Cons. @ 12 V | ∙ @10 mW: Idle = 20 mA; Transmit = 27 mA | @ 25 mW: Idle = 20 mA; Transmit = 32 mA |
868 MHz Pwr Cons. @ 24 V | ∙ @10 mW: Idle = 17 mA; Transmit = 22 mA | @ 25 mW: Idle = 17 mA; Transmit = 25 mA |
CERTIFICATIONS & COMPLIANCE | |
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EMC/EMI | ∙ FCC Part 15 (USA), IC ICES-003 (Canada), ACMA (Australia) |
∙ AS/NZS CISPR 32 (Australia), EN55032 & EN55024 (EU) | |
Safety | ∙ Class I, Division 2, Groups A, B, C, D T4; Ex nA IIC T4 |
∙ Class I, Zone 2 AEx nA IIC T4 | |
∙ ATEX: Sira 14ATEX4143X; Ex nA IIC T4 Gc, II 3 G | |
∙ IECEx: SIR 13.0055X; Ex nA IIC T4 Gc |
GENERAL SPECIFICATIONS | |
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Operating Conditions | ∙ Temperature: Class I, Division 2 (Zone 2): -40 °C to 80 °C (-40 °F to 176 °F) |
∙ Humidity: 0 to 99 %, Non-Condensing | |
Warranty | ∙ 2-Year Parts and Labor |
Country of Origin | ∙ USA |
ORDERING INFORMATION | |
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Model Number(s) | ∙ WM-0900-004, WM-0915-004, 2.4 GHz, WM-2400-004, WM-0868-004 |
Wirelessly Connects To | ∙ OTC Wireless Gateway |
Configuration Cable | ∙ SX1000-CC2, 20-ft All-in-One Configuration Cable |
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