Product Name: Programmable timer relay module.
Working voltage: DC12V (normal operating voltage DC10V-16V).
Source: DC4V ~ 20V (positive trigger common power button, PNP sensors, PLC signals, etc.)
Output capability: You can control the DC or AC 220v5A within 30v5A within.
Quiescent Current: 20mA
working current: 50mA
Life: more than 10 million times;
Working temperature: -40 ~ 85'C;
Weight: about 26g
Dimensions: 64.2mm * 34.8mm * 18.5mm

Features:
S1: power on, press S1 2 seconds to enter mode selection menu, press S1, choose P-1 ~ P-4 mode.
S2: OK / Shift key: Press to adjust the position of the LED is blinking, which LED is blinking, S3 to adjust the value of digital tube flicker. Until you press S2, the digital is no longer flashing.
S3: digital display flashes, S3 adjustment digits from 0-9 successively changed. Normal digital tube display, S3 to adjust the position of the decimal point, the decimal point in bits 0-999 minutes; in 10 bit from 0 to 99.9 seconds; no decimal point indicates 0-999 seconds.

Model Description:
P-1: triggering signal is received, the relay is turned on, the timer expires, the relay off.
A1: During the delay trigger again invalid
A2: During re-timing delay trigger again
A3: Delay trigger again during termination timing relay reset
P-2: triggering signal is received, X start time, the end of counting relay, Y start time, the end of counting the relay off
P-3: Cycle Switch Mode
A1: After power relay is turned on, the end of the timing off, an infinite loop.
A2: After power relay is off, the timing turned end, an infinite loop.

Package Included :

1 x  12V LED Display Programmable Timer Relay Module Delay Car Buzzer Switch Board

• Anti-reverse voltage input circuit, worry-free wiring. Signal input optocoupler isolation, anti-interference ability.
• Set the parameters of power and permanent memory. Powerful flash MCU online programming capabilities, according to user needs can contact the manufacturers to customize the functionality.
• Source: DC4V ~ 20V (positive trigger common power button, PNP sensors, PLC signals, etc.)
• Output capability: You can control the DC or AC 220v5A within 30v5A within.
• Fast free shipping and friendly customer service.

Anti-reverse voltage input circuit, worry-free wiring. Signal input optocoupler isolation, anti-interference ability.IP