BUY ZER-04V-S https://www.utsource.net/itm/p/11577363.html

The JST ZER-04V-S is a 4-pin vertical mount connector with a pitch of 0.5mm. It is a single-row, female connector with a current rating of 0.3A and a voltage rating of 50V. This connector is suitable for use in a variety of applications, including automotive, consumer electronics, and industrial control. It features a secure locking system and is resistant to shock and vibration. It is also RoHS compliant and UL approved. (For reference only)