Usage Tips:GPS module This BN-220 GPS Module using the latest 10th generation chip When you use it for , there is no driver needed. Here is connection with RPi, red to 3.3v, black to gnd, green to txd, white to rxd.The TX LED flash means GPS module output normally. The LED flash means GPS module locate your place.Data level: TTL or -232, default TTL level. To be RS232 output, you need to use one TTL to RS232 converter cable.This BN-220 GPS Module has 4M Flash to save configuration, so you do not need to reset data next time when you use it. Baud rate: 4800bps to 921600bps, default 38400bps. This BN-220 GPS Module using the latest 10th generation chip When you use it for , there is no driver needed. Here is connection with RPi, red to 3.3v, black to gnd, green to txd, white to rxd. The TX LED flash means GPS module output normally. The LED flash means GPS module locate your place. Data level: TTL or -232, default TTL level. To be RS232 output, you need to use one TTL to RS232 converter cable. This BN-220 GPS Module has 4M Flash to save configuration, so you do not need to reset data next time when you use it. Baud rate: 4800bps to 921600bps, default 38400bps. Material: Metal colour: As shown Package Contents: 1 x module 1 x link cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.