Quectel M20 User Manual

M20 EVB User Guide
3.6. Switches and buttons
Figure 10: Switches and buttons
Table 8: Switches and buttons
Part Name I/O Description
S1 5V_SW I Control power supply from adaptor
S2 VCHG I
Control charge to a Li-ion battery by the
module.
S3 D/L I Place to ON when downloading firmware
K1 PWRKEY I Turn on/off the module
K2 EMERG_OFF I
Shutdown the module in emergency.
Hardware power off operation.
M20_EVB_UGD_V1.01 - 16 -
Quectel

Quectel M20 Specifications

General

Brand	Quectel
Model	M20
Category	GSM/GPRS Modules
Language	English