FIELD: fire safety.
SUBSTANCE: thermal fire annunciator, which comprises light diode indicator, six resistors, three capacitors, two diodes, two transistors, two input terminals and thermal element, differs by the fact that it applies thermal element with normally closed contacts, which is connected with the second input terminal.
EFFECT: possibility to use thermal element with normally closed contacts as most widely used sensor.
1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
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RU2306613C1 |
