Eltek SRV250

  • Data Logger with an integrated wireless receiver
  • 3G Cellular Modem
  • Text messaging for alarms
  • 24-hour built-in standby battery
  • 247K reading buffer
  • RS-232 serial ports
  • Transmitter battery alarm
  • Display and keypad for “online” metering
  • Supplied with Gateway software



The SRV250 Receiver logger is the enhanced version of the Eltek RX250 Receiver Logger that contains a built-in 3G cellular modem. The logger is compatible with all of the transmitters in the Eltek GenII family. It can connect with up to 125 transmitters and store data for up to 250 measurement channels. The SRV250 will continually upload data to a PC or cloud server like Amazon EC2 as long as a cellular connection is available. Data uploaded to the server can be accessed via standard Darca software or viewed over the internet in a web browser using the Eltek web viewer. In the event of a cellular interruption, internal memory can store a quarter million readings until the connection is restored. The SRV250 can send SMS text messages for alarms.

The logger has a built-in backup battery to prevent data logging from being interrupted even if there is a temporary AC power failure.


Number of channels: Up to 250
Number of transmitters: Up to 125
Ambient temperature: -10 to +55°C
Humidity: Up to 95% (non-condensing)
Power supply: 12V DC at 500mA powered using type MP12U, (input 100-250V AC)
Built-in batteries: 6 x AA Ni Mh battery
Backup battery life: Typically 24 hours
Memory: 247,000 readings expandable to 2,000,000
Clock accuracy: 1 second/day at 20°C
Dimensions: D 60mm x W 180mm x H 120mm
Weight: 1Kg inc. batteries
Case material: Scratch resistant Nextel coated ABS
PC/modem interface: RS232C up to 38.4K Baud
Receiver: Crystal controlled
Sensitivity: UHF: -117dBm
Antenna connector: SMA 50-ohm female
Antenna: Quarter wave standard, lightweight dipole optional
SIM: Standard size SIM, 3G – (the SIM must be SMS enabled)
Note: A SIM is NOT included


Darca Plus – Standard configuration, monitoring, and data retrieval software for GenII systems

Darca Heritage – Enhanced version of Darca for monitoring large sites over long periods of time


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