Standalone telephone dialer for burglar alarm

Status
Not open for further replies.
H

hassan1980

Full Member level 4
Joined
Jan 14, 2005
Messages
204
Helped
9
Reputation
18
Reaction score
6
Trophy points
1,298
Activity points
1,340
Did anyone build a standalone telephone dialer for burglar alarm without using computer.
 

telephone dialer+schematic+alarm-patentstorm

I builded with HT9200(Holtek) and a QY4(freescale) - it's very easy.
Edson

Added after 3 hours 5 minutes:

Hi Hassan
This schematic was make by tango II dos, because the project is very old.
Edson
 

    H

    hassan1980

    Points: 2
    Helpful Answer Positive Rating
telephone dialer alarm schematic

u can do it using DTMF transceiver IC CM8880 or CM8888
 

standalone telephone dialer

see this shematic



Added after 49 seconds:



Added after 5 minutes:

see this site . too.

**broken link removed**
 

telephone dialer ic

Please - **broken link removed**
 

Re: Telephone dialer

in which way u vant this
handle or with microcontroler
 

Status
Not open for further replies.

Similar threads

Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…