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SIM802 Hardware Design
3.18 Buzzer
The buzzer can be used to drive a buzzer to indicate incoming call. The output volume of buzzer
can be set by "AT+CRSL". The reference circuit for buzzer shown as following figure:
BUZZER
Table 26: Buzzer output characteristics
Parameter
Min
Working Voltage
2.4
Working Current
Load Resistance
1
SIM802_HD_V2.01
4.7K
Figure 35: Reference circuit of Buzzer
Type
2.8
2
59
VBAT
47K
Max
Unit
3.3
V
mA
k Ohms
12.01.2010
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