Black Box SW980A User Manual
6
LOCAL/REMOTE ELECTRONIC SWITCHES
Remote Input
Logic Levels —
Logic Levels —
V
IH
greater than 2.5 volts, maximum +15 volts;
V
IL
less than 0.5 volts, minimum –15 volts
NOTE
For dry-contact operation, the total external-
connection DC resistance must be less than
240 ohms when the dry contact is closed for the
Local/Remote Electronic Switch to correctly
read this condition as a “low” input.
connection DC resistance must be less than
240 ohms when the dry contact is closed for the
Local/Remote Electronic Switch to correctly
read this condition as a “low” input.
Power —
SW980A, SW981A, SW982A:
From wallmount power supply PS154:
Input: 120 VAC, 60 Hz;
Output: 17 VAC CT;
Output: 17 VAC CT;
SW980AE, SW981AE, SW982AE:
From wallmount power supply PS154E:
Input: 230 VAC, 50 Hz;
Output: 17 VAC CT;
Output: 17 VAC CT;
Consumption: 1 watt
MTBF —
65,000 hours
Operating
Temperature
Temperature
—
32 to 140˚F (0 to 60˚C)
Storage
Temperature
Temperature
—
–4 to +158˚F (–20 to +70˚C)
Humidity —
Up to 95% noncondensing
Enclosure —
High-impact plastic
Size —
SW980 and SW981 models: 2.5"H x 6"W x 6.3"D
(6.4 x 15.2 x 16 cm);
SW982 models: 3.5"H x 6"W x 6.3"D
(8.9 x 15.2 x 16 cm)
Weight —
1.5 lb. (0.7 kg)