1. 1 Sutron Corporation ModBusLink Plus sutron.com ModBusLink Plus

2. 2 Sutron Corporation ModBusLink Plus sutron.comOverview ModbusLinkPlus is an ultra-low power wireless node, fully compatible with Sutron’s ModbusLink wireless sensor network (WSN) family. The ModbusLinkPlus measures up to two single ended analog sensors, three differential analog sensors, one SDI-12 sensor & two digital inputs. The ModbusLink family is Sutron’s proprietary extremely low power, self- healing ad-hoc mesh network, optimized to provide years of service while running off the internal battery.

3. 3 Sutron Corporation ModBusLink Plus sutron.comSpecifications NETWORK Frequency/Range 2.4Ghz /1 mile LOS Network Type Ad-hoc homogenous mesh Maximum hops 4 RF Power 20 dBm (max) Antenna 3.2 dBi (max gain) PHYSICAL Enclosure Non-NEMA (NEMA Enclosure Available) 5.3” x 3.8” x 1.3” 13.5cm x 9.7cm x 3.4cm Weight 1 lb. (.46kg) Operating Temperature -40°C to +60°C POWER Power (Internal) 3.4v-12V DC Battery Power (External) 8-16V Average Current 550μA @ 3.6v average (~3mA for Gateway using RS485) MODBUS Modbus protocol RTU mode Communication ports RS232 or RS485 Wake Input Wake input for Modbus port Baud rates 9600 Parity None

4. 4 Sutron Corporation ModBusLink Plus sutron.com Specifications - Continued MEASUREMENTS Switched 12v Supply (3) 3 independently programmable switched 12v power supplies for sensors. Analog to digital resolution 24-bit Reference Voltage 2 - Precision 2.5V reference Single ended analog (3) 0 - 4 V (with respect to ground) Single ended accuracy.02% (typ) Differential inputs (3) ±2.5 V: common mode\voltage range.1 to 4.9V ±312 mV: common mode\voltage range.3 to 3.9V ±39 mV: common mode\voltage range.3 to 3.9V SDI-12 (1) 1 SDI-12 sensor (‘M’ Commands only) Digital Inputs (2) Counter Inputs, Frequency Inputs Max input frequency 1KHz max Tipping Bucket Switched Contact Type Pulse Width between 30ms & 120ms Programmable debouncing

5. 5 Sutron Corporation ModBusLink Plus sutron.comOrdering Part # Description MBLINKPLUS-1 Wireless network node with I/O (transceiver with built-in SDI-12, Analog & Digital Inputs). No Enclosure MBLINKPLUS-1E Wireless network node with I/O (transceiver with built-in SDI-12, Analog & Digital Inputs) With NEMA Enclosure & internal battery 6661-1325-1 External antenna Kit(3dBi antenna, 20’ low loss cable, mounting kit)