Catalog > Internet of Things (IOT) Related Products > More Platforms Time Delay Relay Board Time Delay Relay Board HKD TIMER RELAY BOARD 12V 0-10S Time Delay Relay Board-12V. Adjustable 1 Sec to 10 Sec. 250VAC/10A & 30VDC/10A 26.77 ZAR inc for 1 Each 0 in Stock Add Specifications, Prices & Availability may change without notice. Images are for illustration purposes only. E&OE Features Timing from Microseconds to HOURS Simple Circuitry Precision Pulse Generation / Timing, FMAX = 500 KHz Use a single 4 to 16 VDC supply Excellent temperature stability 0.005% / °C Adjustable Duty Cycle Countless Application and Information Sources Chip (NE555) Characteristic: When unconnected with the supply power, the state of the module is "NO" [ normal open ], CB and COM are conductive. CK and COM are unconductive. When connected with the supply power, delay for 0-10s, the module will in the state of "NC" [ normal closed ], CB and COM are unconductive, CK and COM is conductive Specifications Module Properties : NE555 chip Dimension : 77 (L) x 23 (W) x 18 (H) mm (with potentiometer) Input voltage : DC12V Adjustable time : 0 to 10sec Control voltage : AC 0~250V / max. 10A, DC 0~30V / max. 10A Max. loading : 2200W We suggest using a diode connected to the VCC in series, in order to prevent damaging the chip due to overvoltage or reverse polarity. (The board does not have a diode because relay would not activate if power used is very low)