900-2200Mhz GSM Magnetic Antenna For Landline Phone 400 Tie Points When the light emitted by

When the light emitted by IR LED is blocked because of alternating slots on the encoder disc logic level of the photodiode changes

so this will be perfect for your custom speaker project

the device is Pb-free internally

1V and forward current is 1A

allowing direct sensing near ground

900-2200Mhz GSM Magnetic Antenna For Landline Phone 400 Tie Points When the light emitted byIt's a GSM magnetic base antenna for GSM FWP GSM Landline Phone. Its frequency range lies between 900 2200Mhz and its bandwidth is 70 170. This is a vertical polarization types magnetic base antenna whose maximum input power is 50W and the input impedance is 50ohm. This antenna is commonly used in GSM repeater, GSM Module, GSM modems & GSM sensor . Features Magnetic base type Low VSWR Light Weight Easy to Install Boosts Data Downloading Speed