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General| Type | Wireless Security System |
|---|---|
| Frequency Range | 433 MHz |
| Operating Temperature | -10°C to +50°C |
| Output Power | 10 dBm |
| Range | 100 meters (open area) |
Details physical dimensions of the SPM20 controller unit.
Provides installation dimensions for CTC and CTO measurement units.
Describes the SPM20's LCD display resolution and multi-function capabilities.
Explains indicator status, display modes, and their corresponding information.
Details the function of the device's navigation and selection keys.
Outlines data display options for energy, alarm, and meter information queries.
Guides on configuring communication parameters and managing CT modules.
Lists real-time measurement ranges for current and voltage parameters.
Details accumulation limits for active/reactive power and energy readings.
Explains the custom data setting alarm system and its interface operation.
Refers to the specific SPM20 communication protocol manual.
Details communication parameters like Meter ID and Baud Rate settings.
Defines terminal connections for RS485 and PLbus ports on the device.
Illustrates wiring for single-phase two-wire and three-phase four-wire systems.
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