SMA Male Right Angle 3dBi Gain Modem External Antenna (3G GSM GPRS NB-IOT Wireless Antenna) 150W 4 ohm (2R40) Brand Resistor

4 ohm (2R40) Brand Resistor Chip size 1206 Tolerance 1% Power 1/4W Temperature Range -55°C to +125°C Mounting Type Surface mount No

Coil end 1 and Coil end 2 are used to trigger ON/OFF the relay

These are Carbon Film Resistor with a value of 680k ohm 1/2W and tolerance of ±5%

It will require an ADC converter to work with a Raspberry Pi

These are Metal Film Resistor with a value of 750k ohm 1/4W and tolerance of ±1%

SMA Male Right Angle 3dBi Gain Modem External Antenna (3G GSM GPRS NB-IOT Wireless Antenna) 150W 4 ohm (2R40) Brand ResistorIt's a Rubber Duct GSM External Antenna with a height of 5 cm (2 inches). The antenna is relatively small and can be easily connected to the SMA connector. The antenna has a gain of 2 dBi. This GSM External Antenna is wire free, resulting in a durable and trouble free design. It can be used with the following frequencies: 800 900 1800 1900 2010 2025. It also works with 2G and 3G devices, such as GSM, CDMA, WCDMA, EVDO, and TD. Applications Wi Fi WLAN