Serial Connectivity, I/O Expandable



  • Wirelessly gather/distribute sensor data
  • Map I/O anywhere within the network
  • Modbus master/slave functionality
  • 1x RS232 Serial port
  • 1x RS485 Serial port
  • I/O expansion capable: 4-20 mA / 0-10 V / Digital
  • -40 °C to 80 °C
  • 900 MHz / 2.4 GHz / 868 MHz
  • Secure AES encryption

Primary Data Collection Point

The OleumTech® GP-DH2-W Wireless Gateway plays an integral role in the GP Sensor & I/O Network by being able to wirelessly collect critical process data from GP Wireless Transmitters and other Wireless Gateways. The data is stored in its 1920-point Modbus register holding table.

Serial Interface

With the provided RS232/RS485 Serial connectivity, the GP-DH2-W Gateway can virtually interface any third-party Modbus device for delivering data to the cloud. The GP-DH2-W can be configured as a Modbus Master, Modbus Slave, or LevelMaster ASCII Slave.

Peer-to-Peer Advanced Networking

In the GP Sensor Network, multiple Wireless Gateways can be placed into the same network to form a much larger sensor network. All Gateways can have their own set of end Transmitters and they have the ability to communicate with other Gateways in the network. With this powerful advantage, you can setup sophisticated I/O distribution systems and migrate data with extreme flexibility, scalability and ease.

Scalable Solution; Easy to Use

The GP-DH2-W Gateway can easily solve various I/O challenges with the help of OleumTech I/O Expansion Modules specifically designed for this device. You can utilize the 0-10 Vdc, 4-20 mA, and Digital I/O Modules in any mix and any combination to meet your I/O requirements. The GP Sensor Network allows you to take total command of I/O distribution by allowing you to easily expand and map just about anywhere within its network using its Gateways.


∙ ISM Band, Spread Spectrum
Type: 900 MHz / 915 MHz∙ 900 MHz: FHSS (Frequency Hopping), FSK, AES Encryption 256-bit (900 MHz), 128-bit (915 MHz)
2.4 GHz / 868 MHz∙ 2.4 GHz: DSSS (Direct-Sequence), AES Encryption 128-bit
∙ 868 MHz: LBT (Listen Before Talk), AFA (Adaptive Frequency Agility), AES Encryption 128-bit
Bit Rate∙ 900 MHz: 9600 bps / 115.2 kbps; 2.4 GHz: 250 kbps; 868 MHz: 80 kpbs
Output Power (Max)∙ 900 MHz: 1000 mW; 2.4 GHz: 63 mW; 868 MHz: 25mW
Receiving Sensitivity∙ 900 MHz: -110 dBm @ 9600 bps, -100 dBm @ 115.2 kbps
∙ 2.4 GHz: -100 dBm @ 250 kbps / 868 MHz: -101 dBm @ 80 kbps
RF Range∙ 900 MHz: Up to 40 Miles / 64 km with Clear Line of Sight (Gateway-to-Gateway)
∙ 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
Device Functionality∙ Wireless Gateway with I/O Expansion Capabilities
Embedded Controller∙ 32-bit Low Power ARM7 Microcontroller with Internal FLASH (Field Upgradeable)
Serial Interfaces∙ RTU Port (RS232/RS485) Terminal Block
∙ Modbus Master/Slave, LevelMaster ASCII Slave
Configuration∙ Config / Debug Port - RS232 Slave Only (Mini-USB) / GP Network Configurator
Device Diagnostics∙ Health Tag: Supply Voltage
Dimensions∙ 0.7 x 3.9 x 4.5-in / 17.5 x 99 x 114 mm
Package Dimensions ∙ GM1: 4.8 x 5.1 x 2.8-in / 123 x 129 x 72 mm | GM1K: 5.5 x 10.1 x 2.8-in / 140 x 257 x 72 mm
Package Weight∙ GM1: 0.5 lbs / 227 g | GM1K: ~1 lbs / 0.4 kg
DIN Rail Mounting∙ 35 mm x 7.5 mm DIN Rail
I/O Module Support∙ Up to 5x I/O Modules using 156 mm DataRail Bus
DC Power Input∙ 9-30 Vdc
Average Power Input∙ 2 Watt
Power Consumption @ 12 Vdc∙ Idle: 85 mA; Configuration: 45 mA; Transmission: 350 mA
EMC/EMI∙ FCC Part 15 (USA), IC ICES-003 (Canada), ACMA (Australia)
Safety∙ Class I, Division 2, Groups A, B, C, D T4; Ex nA IIC T4
∙ Class I, Zone 2, AEx nA IIC T4 Gc / 9-30 Vdc
∙ ATEX: ITS15ATEX48231X Ex nA IIC T4 Gc
∙ IECEx: ETL15.0039X; Ex nA nC IIC T4 Gc / 9-30 Vdc
Operating Conditions∙ Temperature: Class I, Div 2 (Zone 2): -40 °F to 176 °F (-40 °C to 80 °C)
∙ Humidity: 0 to 99 %, Non-Condensing
Warranty∙ 2-Year Parts and Labor
Country of Origin∙ USA
Gateway Only (GM1)∙ 900 MHz: BM-0900-GM1; 2.4 GHz: BM-2400-GM1
Gateway with I/O Kit (GM1K)∙ 900 MHz: BM-0900-GM1K; 2.4 GHz: BM-2400-GM1K (Includes DataRail and Mounting Hardware)
DIN Rail Mounting Kit∙ SA1000-WK1 (1x DataRail + Mounting H/W: Cover, 2x End Terminal Brackets, 4x Terminal Plugs)
4-20 mA I/O Module∙ BM-A420-122S (Single Pack) / BM-A420-122D (Dual Pack)
0-10 V I/O Module∙ BM-A010-122S (Single Pack) / BM-A010-122D (Dual Pack)
Digital I/O Module∙ BM-D100-144S (Single Pack) / BM-D100-144D (Dual Pack)
Wirelessly Connects To∙ GP Wireless Devices (Gateways and Transmitters)
Configuration Cable∙ WX-1001-CA2, 15-ft USB to Mini-USB Cable or SX1000-CC2, 20-ft All-in-One Configuration Cable