The KLS 2 from Lumberg is a 3.5mm, 2pole mono jack plug connector. The jack chassis plug are according to JIS C 6560 JC35P2 with straight version, ball headed, bend protection and solder terminals.
Rated current of 1A
Rated voltage of 34VAC/VDC
Insulating body material is polyoxymethylene/polycarbonate
CuZn/steel, nickel plated contact
Mating with 1502 03, 1503 06, 1503 12, KLB 2, KLK 2, KLK 22 jack sockets