Telit LE50-433 SMD-WA

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LE50433W105T020

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Telit LE50-433 SMD-WA
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Product description

LE modules operate in the 433 MHz and 868 MHz ISM license free frequency bands with Tx power up to 25 mW. They organize in a “Star Network” topology over a Telit proprietary protocol ideal for use in replacing communication over cables such as RS485 links (Profibus, Modbus) and half-duplex RS232 links (transparent mode), with wireless technology.

They organize in a “Star Network” topology over a Telit proprietary protocol ideal for use in replacing communication over cables such as RS485 links (Profibus, Modbus) and half-duplex RS232 links (transparent mode), with wireless technology.

• Certified RF modules, LGA xE Form Factor, TTL RS232 interface
• Excellent RX sensitivity • Hayes mode or ‘AT’ mode for configuration
• Listen Before Talk (LBT) for collision avoidance
• Cyclic wake up: wakes up periodically and listens to the radio link
• AES128 data encryption available
• Repeater mode (bridge function)
• Download Over The Air (DOTA)
• Industrial temperature range

Key Benefits
• For ultra low-power, low-latency applications
• Ideal for upgrading cabled applications with wireless technology
• Wide area coverage
• Good for battery powered applications LE50-868 is over the air compatible with LE70-868 (500mW) in G3 868 MHz sub-band.

Technical specifications

Product features

• Range: Up to 2000 m
• up to 128 kB Flash, 4 kB RAM, 2 kB EEPROM
• 32.768 kHz real time clock (RTC), 4 timers
• Configurable output power
• 9 I/O ports max available

Networking

• Frequency: 433.05 - 434.79 MHz Channels: 4 to 8
• Modulation: GFSK
• Point to point, star network
• ACK • Addressed Mode
• Repeater Mode: bridge function (line propagation on the long distances)
• Listen Before Talk
• Telemetry
• Analog RSSI
• Cyclic wake up
• Remote CTS/RTS control
• Hayes Mode
• I/O Copy
• Download Over-the-Air
• AES encryption

 

Data

• Serial Data Rate: Up to 115.2 Kbps 
• Radio Data Rate: from 9.6 kbps to 115.2 kbps

Environmental

• LGA mount technology, 30 pads RF pads for antenna 
• Rectangular 26 x 15 mm, height 3 mm
• Weight 1.7 g
• Temperature: -40°C to +85°C

Interfaces

• Serial Interface: RS232 TTL (Tx, Rx, Cts, RTS)

Electrical & Sensitivity

• Output Power:
• Up to 14 dBm (default for EU 10 dBm) 
• Power Supply: 2.0 to 3.6 V 
• Board Consumption at 25 mW: Rx: 26 mA Tx: 45 mA 
• Std-by consumption:
-external wake-up (interrupt) 1 μA 
-cyclic wake-up (internal timer running) 3 μA 
• Sensitivity (CER ‹ 10-3): -109 dBm

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