Title:
ALARM SYSTEM
Document Type and Number:
Japanese Patent JP2012069067
Kind Code:
A
Abstract:
To provide an alarm systems suppressing a decrease in response.
An alarm system has an alarm unit 1a connected to a transmission device (master unit 2a) for transmitting radio waves and an alarm unit 1b connected to a reception device (slave unit 2b) for receiving the radio waves. The transmission device is configured to be able to transmit radio waves using multiple channels and regulated not to be able to transmit radio waves using one channel continuously beyond a predetermined time duration. The transmission device transmits radio waves using one channel within the predetermined time duration and thereafter transmits radio waves using another channel within the predetermined time duration.
Inventors:
TATEISHI YUKO
Application Number:
JP2010215567A
Publication Date:
April 05, 2012
Filing Date:
September 27, 2010
Export Citation:
Assignee:
NEW COSMOS ELECTRIC CO
International Classes:
G08B25/10; G08B25/00
Domestic Patent References:
| JP2009116492A | 2009-05-28 | |||
| JPH08161678A | 1996-06-21 | |||
| JP2002190761A | 2002-07-05 | |||
| JP2000252857A | 2000-09-14 | |||
| JP2004240900A | 2004-08-26 | |||
| JPH11243590A | 1999-09-07 |
Attorney, Agent or Firm:
Shuichiro Kitamura
Mountain Saki Tetsuya
Takashi Ota
Mountain Saki Tetsuya
Takashi Ota