837-500 - VOLO 2 Door / 2 Reader Master Access Controller with 2 Amp PSU, 4G Modem & SIM
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837-500 - VOLO 2 Door / 2 Reader Master Access Controller with 2 Amp PSU, 4G Modem & SIM
837-500 - VOLO 2 Door / 2 Reader Master Access Controller with 2 Amp PSU, 4G Modem & SIM
837-500 - VOLO 2 Door / 2 Reader Master Access Controller with 2 Amp PSU, 4G Modem & SIM
837-500 - VOLO 2 Door / 2 Reader Master Access Controller with 2 Amp PSU, 4G Modem & SIM
837-500 - VOLO 2 Door / 2 Reader Master Access Controller with 2 Amp PSU, 4G Modem & SIM
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VOLO - 837-500

VOLO 2 Door / 2 Reader Master Access Controller with 2 Amp PSU, 4G Modem & SIM

I.P Connectivity

Product Description

VOLO Cloud Access Control is a highly scalable and flexible cloud-based access control solution, specifically designed to offer centralised control and remote management of multi-site premises and operations. With connectivity achieved over either the LAN or 2G GSM/GPRS mobile network.

The VOLO 837-500 model is the Master Access Controller device and can be used in conjunction with a maximum of 24 additional Expansion controller units to connect up to 50 readers.

With scope for over 100,000 users per controller and over 10,000 sites all connected around the flexibility of a LAN or 2g GSM/GPRS mobile connection, VOLO provides seamless integration of the most remote and separate site locations and applications.


VOLO's connection options of LAN or 2g GSM/GPRS offer huge flexibility in terms of access to remote locations whereby power is the only service required for VOLO to operate. This is further enhanced by offer real cost savings versus the alternatives of installing ADSL or Fibre.

The ACU will store up 4,000 events locally in the event of a loss of connection to the Amazon Web Services Cloud, ensuring no loss of event data.

What makes up a VOLO cloud-based access solution?

VOLO consists of three parts:

1. Access Control Units (ACUs):
Provide the hardware interface for each site or premises, facilitating the implementation and management of access control functionalities.

2. VOLO Cloud:
Enables installers and end-users to access and log in from any standard web browser, including smartphones, tablets, or PCs. This platform provides the capability to configure, administer, and manage the access control solution remotely.

3. VOLO Licences:
Facilitate continuous connectivity and access to the Access Control Units. This connectivity can be established through either an Ethernet or GSM/GPRS connection, ensuring ongoing and reliable communication within the system.

Find out more about VOLO cloud-based access control:

Specification Sheet

  • 2 Door / 2 Reader MASTER Controller
  • Open protocol to allow any Clock and Data or Wiegand* reader to be connected (*upto 64 bit)
  • 24 x VOLO Expansion controllers (Part No. 837-510) can be connected to 1x VOLO Master controller
  • Over 10,000 sites
  • Over 100,000 users
  • 128 Time zones available
  • 512 Access levels available
  • Accessible via any web browser from any Internet enabled device
  • Open REST API available to allow 3rd party software interface
  • Designed and manufactured in the UK
Description 837-500
Supply 100-240V AC50/60Hz or 12/24V 2A AC/DC
Power consumption 2A max @ 12V, 500mA typ @ 12V
Temperature 32° to 120°F, 0° to 55°C
PSU 12V DC 2A with charger
Battery backup 12V 7AH (not included)
Mobile network Any GSM/GPRS
Communication options Ethernet or GPRS up to 50 doors per master controller
Dimensions (W x H x D) 236mm x 320mm x 80mm
Readers / keypads Clock and Data, Wiegand (Upto 64 bit) and customer format
Antenna GSM/GPRS, SMA female, T bar provided
Integrated modem (master only) Quad band GSM / GPRS
Ethernet 10/100 Mbps (controller to controller)
RS485 dataline 1000m max
EMC CE (R&TTE), FCC
Safety EN60950
Activity reports Weekly, monthly, daily
LED indications Power, unlock, modem OK and diagnostics
Housing Material Plastic
Dimensions (cabinet housing) 235(W) x 320(H) x 75(D) mm
Weight (Net) 1.30kg
Weight (Gross) 0.00kg
Accreditations
  • UVDB Registered
  • PLASA Member
  • Member of BESA
  • BSI 9001
  • ISCE supporting member