#03-2, M1S: Two Low-Power Relays (Configuration 2)
Function: Two mechanical low-power relays with joined middle (common) terminals. Relay 1 has normally closed and normally opened terminals. Relay 2 only has the normally opened terminal exposed.
Form factor: M1S
Category: Output module
Special needs: ---
Power requirements: 5V/60mA (with both relays activated)
See also: #03-1, #06, #07, #15, #58, #59
Details
These relays are rated for 1A/30V.
To activate a relay, set the corresponding control line LOW. When left unconnected, control lines default to HIGH (and, hence, relays are off).
Combine Tibbit #03-2 with terminal block devices — #20 (nine terminal blocks) or #21 (four terminal blocks).
LEDs
There are two red LEDs connected to the two relay control lines. The LEDs light up for the LOW state of the control lines (i.e., when relays are activated).