[montewilson (Monte)]

Here is what I found. If this is what they have inside you are out of the woods. If not show me one and I will see what I can do. Go to www.jaycar.com.au and put in relay in the search box. You will have to find out what the working voltage is for the ST-4. Its probably 5v. There are 5v models too. Don't forget you may require a diode in the circiut to supress charges that can weld the tiny contacts in these relays shut. I had this problem years ago and I lost months trying to find it. Good luck.


12V SPST DIL Reed Relay

They will fit into a 14 pin IC socket, are highly sensitive and can be driven by TTL, etc. SPST normally open. Nominal Voltage: 12VCoil Resistance: 1000ohms Must Op: 9.00VDC Must Release: 0.8VDCCoil Rated Current: 12mA Contact Voltage: 25max

QTY
1+$2.25
10+$1.85
25+$1.65