This part is a kind of semiconductor called 899-1A-C.

Function of this product has Relay.

Manufacturers : Song Chuan

Image and pinout :

Some of the text within the PDF file :

Song Chuan / Relay Catalog 899 Features · Baby Sugar Cube Relay. · 10A 277VAC ; 15A 125VAC ; UL/CUL, VDE Approvals. · High Insulation up to 2000V ( 899B type ). · High CTI material greater than 250. · Comply with RoHS-Directive 2011/65/EU. Type List Terminal style Contact form 1A (SPNO) UL Insulation system approval F F F F F F Designation (provided with) Flux tight 899-1A-C 899-1A-F-C 899-1B-C 899-1B-F-C 899-1C-C 899-1C-F-C 899B-1A-F-C 899B-1B-F-C 899B-1C-F-C Sealed type washable 899-1A-S 899-1A-F-S 899-1B-S 899-1B-F-S 899-1C-S 899-1C-F-S 899B-1A-F-S 899B-1B-F-S 899B-1C-F-S 1B (SPNC) PCB terminal 1C (SPDT) 1A (SPNO) 1B (SPNC) 1C (SPDT) Ordering Information 899 - 1A - F - C 1 2 3 4 E 5 XXVDC 6 1. 899 899B -- Basic series designation -- Basic series desig [ ... ]

899-1A-C PDF Datasheet Download