Profile: HE and BS Benson Ltd. specializes in the manufacture of solenoids and electromagnets. We are an ISO 9000 certified company. Our products include AC & DC linear, DC latching, electromagnet, shotbolt, and door holders for fire protection. Our solenoids are low power electrical pulse of opposite polarity is applied to the circuit. The latching solenoids are a combination of electromagnetic solenoid and permanent magnets. We also provide flush mounting, surface mounting, and floor mounted electromagnetic door holders for fire protection.