ZK-KTD4 MOS Switch Trigger Cycle Time Delay Relay Solenoid Valve Control 5-30V S$ 2.88 to S$ 6.91S$ 7.36
ZK-TD4 MOS Switch Trigger Cycle Timing Delay Module Solenoid Valve Control B2AM S$ 2.75 to S$ 6.47S$ 2.93