The I500SR by CDVI is a monitored surface maglock with a holding force of up to 500kg and cased in high grade stainless steel. The I500SR is a monitored surface maglock with a holding force of up to 500kg. Cased in high grade stainless steel, with a unique cover plate, this magnet is supplied with a full fixing kit. 500kg holding force Monitored surface mount maglock Stainless steel construction For use in harsh environments 12-24Vdc Female M20 cable gland outlet