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General| Current Consumption (Standby) | 50 mA |
|---|---|
| Power Consumption (Standby) | 0.6 W |
| Communication | GSM |
| GSM band | 850/900/1800/1900 MHz |
| Maximum number of SMS users | 5 |
| Maximum number of voice call users | 5 |
| Maximum number of system users | 10 |
| Number of inputs | 2 |
| Number of outputs | 1 |
| Output type | Relay |
| SIM card | 1.8V/3V |
| Operating Temperature | -20°C ~ +55°C |
| Communication Interface | RS-232 |
Describes the primary functions and capabilities of the ESIM251 device.
Lists electrical, mechanical, and operational specifications of the ESIM251.
Provides step-by-step instructions for installing the ESIM251 system.
Sets system language and confirms SMS central number.
Manages authorized phone numbers for system access and control.
Sets system date and time for accurate reporting and scheduling.
Customizes alert messages and output names for better identification.
Activates or deactivates specific input zones for monitoring.
Requests and configures periodic status updates via SMS.
Enables audio monitoring of the secured premises remotely.
Controls relay output (C1) via SMS or sets timed operations.
Configures SMS alerts to be sent to multiple recipients.
Sets up the system to call all registered users during an alarm event.
Introduces advanced configuration methods via SMS or software.
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