Table 4.

Comparison of GPS modules.

GPS Module	BK-SIM808	Ublox NEO-6M	Grove GPS Module
Accuracy	2.5 m	2.5 m	2.5 m
Cold Start	30 s	27 s	13 s
Warm Start	28 s	27 s	1–2 s
Hot Start	1 s	1 s	<1 s
Update Rate	5 Hz	1 Hz, max 5 Hz	1Hz, max 10 Hz
Sensitivity	−165 dB	−161 dB	−160 dB
SIM Card Features	Yes	No	No
Operating Voltage	5 V	3–5 V	3.3–5 V
Module dimensions	37 × 37 mm	23 × 30 mm	40 × 20 mm
Price	14 € (+2 € antenna)	23 €	21 €