Model | LPB4526W1005-GA-12-2.9-R |
Rated Voltage | 12 VDC |
Operating Voltage | 3～20 VDC |
Current Consumption | ≤35 mA |
Test distance | 30 cm |
SPL | ≥100 dB @30cm |
Resonant Frequency | 2900±500 Hz |
Tone | Continuous sound |
Operating Temperature | -20 ～ +70 ℃ |
Storage Temperature | -30 ～ +80 ℃ |
Weight | 17.5 g |
Carton size | 58.5×33.5×34 cm |
Quantity | 735 pcs |
Gross Weight | 15.86 Kg |
Alarm piezo buzzer music program
#include <reg52.h>
sbit speaker = P1^7;
unsigned char timer0h, timer0l, time;
//--------------------------------------
// SCM crystal using 11.0592MHz
// frequency - half cycle data sheet high eight The software has saved a total of four octaves of 28 frequency data
code unsigned char FREQH[] = {
0xF2, 0xF3, 0xF5, 0xF5, 0xF6, 0xF7, 0xF8, //Low sound 1234567
0xF9, 0xF9, 0xFA, 0xFA, 0xFB, 0xFB, 0xFC, 0xFC,//1,2,3,4,5,6,7,i
0xFC, 0xFD, 0xFD, 0xFD, 0xFD, 0xFE, //High sound 234567
0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFF}; //High sound 1234567
//Frequency - Half period data table low eight
code unsigned char FREQL[] = {
0x42, 0xC1, 0x17, 0xB6, 0xD0, 0xD1, 0xB6, //Low sound1234567
0x21, 0xE1, 0x8C, 0xD8, 0x68, 0xE9, 0x5B, 0x8F, //1,2,3,4,5,6,7,i
0xEE, 0x44, 0x6B, 0xB4, 0xF4, 0x2D, //Low sound 234567
0x47, 0x77, 0xA2, 0xB6, 0xDA, 0xFA, 0x16}; //High sound 1234567