HIGHLIGHT:
one of the most popular general purpose relays: 10A relay
20A relay is avilable right now!!
can replace to below relays:
             Omron relay: LY

             Zelio relay: RPM

             Magnecraft relay: 781/782/783/784

             Finder relay: 56

             Idec relay: RH

        ** more cross reference detail? please check this link. **

 mechianical latching relay by manual button
wide choice of coil volts: 6V, 12V, 24V, 48V, 110V, 120V, 220V, 230V, 240V
relay socket PTF-05, PTF-08A, PTF-14A for plug-in style relay
pcb relay (pcb mounted terminal if choosing P type instead of S type)
UL listed: E115915 
CHOICE: 

3 contact load:
* 10 amp 28VDC, 10 amp 240VAC

* 20 amp 28VDC, 20 amp 277VAC (for 1C, 2C)

* 15 amp 120VAC, 12 amp 28VDC, 12 amp 277VAC (for 3C, 4C)

configuration (changeover): 
* 1C (5 pin/ SPDT)

* 2C (8 pin/ DPDT)

* 3C (11 pin/ 3PDT)

* 4C (14 pin/ 4PDT) 

terminal types: PCB mounted terminlal or plug-in style 
cover choice; plain cover (clear cover)
functions: LED, indicator, manual button (test button)
volts range:
DC relay: 6V, 12V, 24V, 48V, 110V

AC relay: 110V, 120V, 220V, 230V, 240V