This part is a kind of semiconductor called HRW-124LM1.

Function of this product has Power Relay.

Manufacturers : RC Electronics

Image and pinout :

Some of the text within the PDF file :

RC 深圳市欣日成电子有限公司 Mid-Range Power Relay--HRW-1 Shenzhen RC Electronics Co., Ltd. HRW-1 Feature (L)x 16 (W)x 20 (H)mm 20(L)x (L)x16 16(W)x (W)x20 20(H)mm 1. Low profile size: 20 2. Switching Capacity: 15A/125VAC 3. Low cost type 10A 28VDC/250VAC Typical applications ◆Automotive ◆HVAC ◆Home Appliances ◆UPS ◆Power system ◆Industrial control Reference cross:JQC-21F 812H SRUDH SRU HM810 RC 深圳市欣日成电子有限公司 Mid-Range Power Relay--HRW-1 Shenzhen RC Electronics Co., Ltd. Specifications ◆ Contact Ratings Number of poles Arrangement Initial contact resistance, max.(by voltage drop 6VDC/1A) Contact material Rating (resistive load) 1 Pole 1 Form A, 1 Form B ,1 Form C 50mΩ Silver alloy Nominal switching capacity Max. switching power Max [ ... ]

HRW-124LM1 PDF Datasheet Download