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Selec XT543 Digital Multifunction Timer
Selec XT543 Digital Multifunction Timer is a compact, reliable timer with multiple functions like ON delay, OFF delay, and cyclic modes. It offers a wide time range (0.01 sec–999 hrs), bright LED display, and universal voltage input (85–270 VAC/DC) — ideal for industrial automation and process control.
Selec XT543 Digital Multifunction Timer
The Selec XT543 is a versatile digital multifunction timer designed for accurate time control in industrial automation and electrical applications. Featuring a bright LED display, user-friendly programming, and multiple operating modes, it delivers reliable timing control for a wide range of processes.
Key Features:
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Multifunction Timer: Offers multiple time ranges and modes such as ON delay, OFF delay, interval, cyclic, and more.
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Dual Display: Clear LED display for preset and elapsed time indication.
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Wide Time Range: Configurable from 0.01 seconds to 999 hours, providing flexible operation.
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Multiple Output Options: Supports relay or transistor output based on application requirements.
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Compact Design: DIN rail or panel mounting options for easy installation.
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Universal Supply Voltage: Operates on a wide input range (typically 85–270 VAC/DC).
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High Accuracy & Reliability: Ensures precise timing and long service life even in demanding industrial environments.
Applications:
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Industrial automation systems
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Motor and pump control
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Conveyor systems
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Process sequencing
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Lighting and heating control
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General electrical and machinery timing
Technical Specifications:
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Model: Selec XT543
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Display: 3-digit LED display
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Functions: Multifunction (ON delay, OFF delay, Interval, Cyclic, etc.)
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Time Range: 0.01 sec to 999 hrs
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Supply Voltage: 85–270 VAC/DC
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Mounting: Panel / DIN rail
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Output: Relay / Transistor
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Operating Temperature: 0°C to 55°C

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- Single row 0.1″ header for easy connection to a host system
- Power requirements: +5 VDC
- 30 mA idle
- 46-220 mA active (depending on speech parameters and output load)
- Communication: Asynchronous 9600 bps serial (8N1)
- Dimensions: 1.25″x1.5″x0.37″
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Text support rate is better
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Interface operation is simpler
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5V single power supply.
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Output directly connected to the speaker, can drive 4 ohms 3W / 8 ohm 2W speakers
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Busy status output, can be connected to the microcontroller IO or indicator light, no need to be left floating.
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Voice effect optimization
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Module miniaturization and easy integration
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Dimension: 33*27.5mm
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With mounting holes

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