Soil moisture detector with light activated audio alarm inhibito

Details Soil moisture detector with light activated audio alarm inhibito Soil moisture detector with light activated audio alarm inhibito

1987-07-15

1988-12-13

Orsino, Jr., Joseph A.

Communications: electrical

Condition responsive indicating system

Specific condition

324 65R, 307117, 361175, G08B 2100

Patent

active

047914130

ABSTRACT:
The soil moisture alarm device comprising of a conductivity sensor, a photoelectric light sensor, an ON-OFF controllable audio generator, a buzzer and a DC battery as a source of power. The device can be placed in the pot permanently. It will not work without ambient light, so that it will not disturb people at night when they are sleeping.

REFERENCES:
patent: 3590335 (1971-06-01), Tetar
patent: 3927370 (1975-12-01), De Bough
patent: 4514722 (1985-04-01), Batcheler et al.

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