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## Supported hardware types

Modern IoT solutions require a flexible approach to the selection of hardware components, especially when it comes to telemetry systems. Telemetry units, which act as a key link between physical devices and the Global Secure IoT Platform, differ in a number of critical parameters.

<Alert type="info">
  The right choice of equipment ensures reliable data transmission, energy efficiency and compliance
  with the requirements of a specific infrastructure.
</Alert>

This section of the documentation describes the main criteria for classifying devices, as well as their technical features.

### Classification of telemetry units

#### Power supply system

Telemetry units are adapted to work in a variety of conditions, which is reflected in their power supply options:

- **Power supply devices**: Powered by an alternating current network (220 V). Suitable for stationary objects with constant access to the power grid.
- **Autonomous solutions**: Long-life batteries (up to 5 years in low power consumption mode). Ideal for autonomous IoT devices without access to the power grid.
- **Hybrid systems**: A combination of solar panels, batteries and backup network power. Used in industrial facilities with a risk of power outages.

**Key parameters**:

- Supply voltage: 3.7 V (DC) / 100–240 V (AC).
- Power consumption in standby mode: ≤ 0.1 W.
- Battery life: Dependent on battery type and data transfer frequency (configurable via the platform).

#### External interface types

The units support the following interface types:

- **RS-232/RS-485/UART-TTL**: Physical layer standard for asynchronous interface.
- **Optical port**: For IrDA optical read heads.

### List of supported devices

Below are certified telemetry units compatible with the Global Secure IoT Platform:

| Telemetry unit type | Power supply system                                                          | External interface types                               | Server exchange protocol |
| ------------------- | ---------------------------------------------------------------------------- | ------------------------------------------------------ | ------------------------ |
| VADTel IIoTU2       | Combined: <ul><li>External 220 V</li><li>Autonomous 3.7 V 4000 mAh</li></ul> | RS-232<br />RS-485 Full Duplex<br />RS-485 Half Duplex | Type-T                   |
| VADTel IIoTU3       | External power supply 220 V                                                  | RS-232<br />RS-485 Full Duplex<br />RS-485 Half Duplex | Type-T                   |
| VADTel AIoTU5       | Autonomous power supply 3.7 V 2000 mAh                                       | Magnetic sensor                                        | Type-J                   |
| VADTel AIIoTU8      | Autonomous power supply 3.7 V 8000 mAh                                       | RS-232<br />RS-485 Full Duplex<br />RS-485 Half Duplex | Type-T                   |
| VADTel Sens         | Autonomous power supply 3.7 V 6000 mAh                                       | Pressure and temperature sensor                        | Type-J                   |

## Data transfer methods

The following methods of data transmission to the server are implemented:

- Request/response mode, via Type-T and Type-J protocols, for data exchange between the IoT device and the server.
- Direct data transfer initiated by the IoT device, via Type-J protocol.

Data transfer via Type-J protocol is possible both to a protected IoT platform, as well as to third-party OPC servers (for subsequent data transfer to SCADA-systems) and servers supporting drivers.

## AI powered development

<Cards cols={2}>
  <Card
    icon="zap"
    title="Using AI in driver development"
    description="Features, algorithm of use and main advantages."
    href="/en/platform/v2/equipment-and-data-transfer/ai-drivers"
  />
  <Card
    icon="activity"
    title="AI Sensors"
    description="Implementing AI in the cutting-edge pressure and temperature sensors."
    href="/en/platform/v2/equipment-and-data-transfer/ai-sensors"
  />
</Cards>