Netshield developed and manufactures a range of ethernet wired or wireless intelligent gateways (Linux OS) as part of the hardware building blocks for an IoT solution.

Customers looking to remotely manage infrastructure, sensitive equipment, energy and water distribution or respond accurately to environmental threats such as fires and even flooding, can now do so at scale and across multiple sites with a Point of Presence Convergence gateway. When multiple instances of the devices are deployed, they can create a full view of events and even help to ensure the even distribution of services such as power and water in a multi-site environment.

Netshield has designed and maintains various cost-effective Intelligent GSM, Wireless and Wired ethernet IoT/Cloud convergence point-of-presence gateways, these gateways are always fitted with;
· a feeding utility power presence monitoring sensor,
· a rechargeable backup battery and
· battery status indicator
to ensure that critical events can be relayed during power failures and interruptions.
The Netshield iPoP gateways have the capability of managing the use of out-of-band bandwidth, in the GSM (2G/3G/4G/LTE), LoRa and SigFOX space. This functionally allows users to minimize the use of expensive bandwidth utilization by configuring the PoP Gateways in ether a ‘Status-event-alert mode’ or ‘True IoT mode’.
In the ‘True IoT mode’, the gateways are not sensitive to bandwidth utilization and relay sensor samples as regularly as possible, this reporting interval can also be user defined. In the ‘status-event-alert mode’ the user configures the types of occurrences in ether status or event or alert modes, determined by criticality and trigger-levels of each sensor. Then the user selects the preferred reporting period for each type of occurrence to minimize the bandwidth used.


The iPoP Gateways have user-definable multilevel triggered and scalable reporting intervals. This is functionally defined like that of a traffic robot, allowing users to scale/define the volume of reporting – critical to application where the cost of data is a factor.

· ‘Green or Status’ occurrence, when the connected sensors statuses are within acceptable user-definable ranges. The gateway will send an all good/presence heartbeat once a day (default), this can be scaled to as frequently as every 10-minutes.

· ‘Orange or Event’ occurrence, when any of the connected sensors statues move into the user-definable low/medium-risk sensing range, the gateway will report all-sensors current values every 2-minutes (default). This can be scaled from every 2- to 120-minutes.

· ‘Red or Alert’ occurrence, when any of the connected sensors move into a user-definable high-risk sensing range, the gateway will report all sensor values every 30-seconds (default). This interval can be scaled from every 30-seconds to 30-minutes.

· Threshold hysteresis is integrated at each trigger level to ensure a lagging effect at these points to eliminate trigger point flapping.

The local terminal session embedded within the iPoP gateways enable local communications, through serial port, that can connect and locally communicate to point of presence equipment like UPS’s, Generators, Energy-meters, Fire-panels, CRAC-systems (AirCon), BMS, Access-control and media equipment like CT-scan and X-ray equipment. These local session extract information from the abovementioned systems and repackages the information in to IoT protocol and only Events and Alerts are relayed to the managing cloud or server platform.

The gateways are constantly being upgraded to ensure that we meet ever-changing requirements.

Basic SMS based GSM PoP Monitoring Gateway: Power on/off

Optional: Device can be Upgraded to report via TCP/IP, UDP, HTTP, MQTT, AMQP, Raw-socket and JSON);
The device has the following capabilities;
a. Check power on/off status through the onboard SA 3-PIN plug
b. Check status of Internal LiPo rechargeable Battery
c. Read status of one additional sensors (Optional)
i. Temperature
ii. Humidity
iii. Flooding
iv. Door contact

NGSMPM-PH1 SMS messaging 2G GSM Based Single phase utility power Monitor with; Integrated SA 3 pin plug, Micro SIM socket (external), SMA Socket (Antenna), Internal rechargeable LiPo battery, Status LED’s, SMS messaging & Optional or IoT/Cloud enabled GPRS (MQTT/JSON) and Optional external Sensors – Temperature (1-Wire), Humidity (I2C), flooding (Analogue) and Door-contact (IO) sensors
iPoP GSM Monitoring Gateway (TCP/IP, UDP, HTTP, MQTT, AMQP, Raw-socket and JSON) with the following capabilities; (NGSMPM-PH2)

a. power on/off
b. class 1 energy metering of cabinet consumption
i. input voltage & current
ii. KWh instant & accumulative (billing
iii. Power factor
iv. Active and reactive power (to mention the most important ones)
c. Temperature
d. Humidity
e. ++
f. Door contact status
g. Seismic/Vibration

iPoP GSM & wired Ethernet Monitoring & Control Gateway (TCP/IP, UDP, HTTP, MQTT, AMQP, Raw-socket and JSON) with the following capabilities; (NS-IIOT-BNKSOL-1)

a. power on/off

b. full class 1 energy metering of cabinet consumption

  •  input voltage & current
  •  KWh instant & accumulative
  • Power factor
  • Active and reactive power (to mention the most important ones)

c. Up to 4 Temperature sensors.

  • Humidity
  • Flooding
  •  Door contact status
  • Seismic/Vibration

d. Up to 8 dual triggered smoke detection

e. Serial communications into UPS’s

f. Remote power

  • Recycle
  • Off/On function

g. Monitoring of electrical Distribution board type1/2 surge protection devices

iPoP GSM & wired Ethernet Monitoring & Control Gateway Rack-mountable IoT/Cloud Cabinet/Branch Controller (NCBNTCNTLR-GSM1)

a. Utility power On/Off monitoring sensor, powered from 90 to 240VAC
b. Inline 16Amp Circuit Breaker and Remote switchable relay
c. Surge protection
i. Internal Monitored Type 3/class III surge protection,
ii. Digital IO monitoring of external Type 1/2 – Class I/II DB-mounted Surge Protection Unit
d. Energy Metering device
i. Internal 45-Amp single Phase Class 1 energy meter,
ii. External 100-Amp three Phase Class1 energy meter on external RS485 Bus
e. Switched and metered internal PDU with 4 x C14
f. Rechargeable battery
i. lead acid – 1.4Ah with 60-Watt charging circuit or
ii. Lithium Polymer – 1.2Ah with 2-Watt charging circuit
g. LED’s status indicators,
i. Power on and Charging
ii. GSM Signal Strength and Network status
iii. Ethernet Data rate and Link
h. Upstream GSM with
i. push-push nano- SIM socket
ii. external SMA GSM antenna connector (SIM-card and antenna not included)
i. 10/100 Ethernet TCP/IP & UDP interface,
j. Sensor interfaces,
i. Four external RS485 extension Point of Delivery (PoD)
▪ Three PoD’s with two x dual trigger Smoke detection circuits (4-Smoke detectors used)
▪ One sensor expansion PoD (Temperature, Humidity and Flooding)
ii. Sensor ports
▪ Four 1-wire temperature,
▪ Two analogue flooding or Pressure Transmitters,
▪ One Humidity (I2C),
▪ One Door Contact or IO for seismic/Vibration
iii. Onboard smoke detection port with dual trigger Smoke detection circuits on IO (4-Smoke detectors)
iv. Maintenance Switch (IO)
k. Cabinet Door Interface;
i. Door-switch sensing
ii. Strike or Actuator control
iii. Wiegand Keypad, RFID or Biometric access interface
l. Selectable external RS485/RS232 UPS interface,
m. Functional protocols TCP/IP, UDP, SNMP, MQTT, AMQP, JSON with optional Telegram, Slack, SMS onward alerts.

Netshield also has wired ethernet (TCP/IP, UDP, HTTP, MQTT, AMQP, SNMP, Raw-socket and JSON)

The EV and Smart PDU have multi-protocol capabilities, thus can send certain event/alert to event triggering system through SNMP and simultaneously stream all events to the cloud through MQTT/JSON.

iPoP Smart PDU SNMP/IoT/Cloud PoP Gateways to service your cabinet requirement options with 16 x C13 + 4 xC19 power feeding sockets with the following capabilities; (NSP32C138C19-32A)


a. Power On/Off trip switch

b. full class 1 energy metering of cabinet consumption

  • input voltage & current
  •  KWh instant & accumulative
  •  Power factor
  • Active and reactive power (to mention the most important ones)

c. Up to 6 Temperature sensors

d. Humidity

e. Flooding

f. Intelligent access handles & door contact status

g. Remote power Off/On function

h. Serial communications into UPS’s

i. Expansion POD for additional IO to control air conditioners, access and monitor surge protection

j. Option GSM out of band management

iPoP for the Datacentre environment we have our EV PoP SNMP/IoT/Cloud
Monitoring Gateways with the following capabilities; (NVIROMON-ULT-1S)

a. Up to 160 environmental sensors

b. Access control for up to 6 access doors with biometric readers,
door status and IP cam triggers

c. Up to 6 CRAC units (Aircons)

d. Multi power monitoring and control of up to 4 Class
1 energy meters, 2 x UPS’s, generator

e. Fire detection and extinguishers with integration into a limited range of fire-panels

f. Expansion IO options

g. Option GSM out of band management

IOT WiFi Multi Sensor – Wireless Gateway

Customers looking to dramatically simplify the installation process of IoT (Internet of Things) sensors, can now take advantage of Netshield’s WIFI IOT Multi Sensor and IO modules. These devices are the perfect accompaniment to IoT environments where power and cost may be an issue, enabling customers to monitor the environmental factors of their business environment all via the cloud.

The WIFI IOT Multi Sensor and IO modules have their own battery and as a result do not need either a power source or a wired connection to operate. With its own built in Wi-Fi interface, you can string sensors onto the device, which can then leverage the Wi-Fi connection to send data gathered from the sensors back into your environment.