• Conforms to ETSI EN 300 220-3 (radio) and EN 301 489-3 (EMC) standards.
• Data rates up to 40 kbps with a usable range up to 300 meters.
• Available frequencies: 433.92MHz, 434.42MHz, and 869.85MHz.
• Compact size: 20x10x2mm (without can), 20x10x2.6mm (with can).

• Crystal-locked PLL, FM modulated up to 40kbps.
• Operates from 2.2V to 4V, with up to +4dBm output.
• Improved frequency and deviation accuracy.

• Remote control key fobs, EPOS, inventory tracking.
• Industrial telemetry, data loggers, environmental monitoring.
• Car and building security, vehicle data up/download.

The TX2S is a crystal-based PLL controlled FM transmitter, type approved for European use, delivering +0dBm at 7mA. It measures 20 x 10 x 2 mm.

• RF GROUND (pin 2): Connect to RF return path.
• RF OUT (pin 1): 50Ω RF output to the antenna.
• VCC (pin 5): +2.2V to +4V DC supply.
• GROUND (pin 3): DC supply ground.
• DATA (pin 4): DC-coupled modulation input.

• Operating temperature: -20°C to +70°C.
• Storage temperature: -40°C to +100°C.
• Vcc: -0.3V to +4.0V.

• Supply voltage: 2.2V to 4.0V.
• Supply current: 6-10 mA at 3V.
• RF power: 0 to +4 dBm.
• Harmonics: -54 dBm @ <1GHz.

Ripple/noise should be below 10mVp-p. A 10µF low-ESR capacitor and a 10Ω series resistor are recommended for stability.

FM deviation is achieved with a TXD input of 2 to 4V amplitude.

Good RF layout practice is essential. Use 50Ω microstrip line or coax for connections.

• Helical, loop, and whip antennas are recommended.
• Whip antennas offer the best range but are sensitive to ground plane effects.

10% duty cycle restriction on 433.050-434.790 MHz band in most EU states.

• TX2S-433-40-3V: 433.92MHz.
• TX2S-434-40-3V: 434.42MHz.
• TX3S-869-40-3V: 869.85MHz.

• RX2G and RX3G series for corresponding frequencies and data rates.

Complies with R&TTE Directive. Users must ensure compliance with duty cycle requirements.