The OMR-106H relay may be directly interfaced with the PICAXE. The coil resistance is nominally 250 Ohms and thus when a PICAXE output is high, the current flowing in the relay is 20 mA, well within the 25 mA maximum source current specificied for the PIC16F818 and PIC16F88.
The relay provides four terminals, three on one side and one on the other which are on a 0.1 inch grid and thus this relay may easily be used with a solderless breadboard or with a prototyping board such as the Olimex PIC-P18 protoboard for 18-terminal PICs.
Note, that a diode across the relay's coil should be used to avoid the switching tansient from destroying a PICAXE output.
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PICAXE ------------------------ Relay Coil ------------ GRD
Although the specification sheet for the relay indicates the maximum contact voltage of 125 VAC, I would discourage using an open relay of this type for anything more than switching up to 60 VDC. 120 VAC can kill. Use an optically isolated solid state state relay when working with 120 VAC!
This relay is also sold by Cat # 275-232.