This is one of the semiconductor types. This part name is SLA-12VDC-S-L-C.
This product has Relay functions.
Manufacturers of product is Songle.
Image and pinout :
SLA-12VDC-S-L-C PDF Datasheet
Some of the text files within the PDF file
SONGLE RELAY RELAY ISO9002 SLA 1. MAIN FEATURES ﾷ Up to 30A switching in SPST and 20A switching in spot arrangements. ﾷ Available as an open-frame relay, with a snap-on dust cover or with an immersion cleanable, plastic sealed case. 2. APPLICATIONS ﾷ Used for power switching, Electrical Heater, ventilator, Air conditioning, Refrigerating, Automobile and House-hold Appliance. 3. ORDERING INFORMATION SLA Model of relay SLA XX VDC Nominal coil voltage 05 06 09 12 18 24 48 110VDC S Structure S:Sealed type Coil L sensitivity C Contact form A:1 form A B:1 form B C:1 form C L:0.93W D:Special F:Flux free type 4. RATING 20A/28VDC 250VAC 30A/30VDC 250VAC CCC FILE NUMBER:CQC03001003728 UL/CUL FILE NUMBER: E179944 TUV FILE NUMBER: R50056114 30A/250VDC NO:20A/240VAC 28VDC NC:10A/240VAC 28VDC NO:30A/250VAC 30VDC NC:20A/250VAC 30VDC 5. DIMENSION(unit:mm) DRILLING(unit:mm) WIRING DIAGRAM 1 6. COIL DATA CHART (AT20 ö C) Coil Sensitivity SLA [ … ]
Please refer to the file for details.