Several working modes for users to freely set, multi-function:
     P-1: time (timed) relays
     P-2: time (delay) and relays
     P-3: voltage relay
     P-4: voltage control relay A
     P-5: Voltage control relay B
     P-6: voltage overload mode
     P-7: voltage-limiting control relay
    Relay coil input DC12V (optional DC5V or DC24V)
     Voltage test range: 0-99.9V
     A set of transformations (normally open normally closed)
     Contact load: 10A/277VAC
     Contact, contact resistance: ≤ 100m (1A-6VDC)
     Mechanical durability: > 10 million times
     Durability: > 100,000 times (10A-250VAC)
     Working environment temperature:-40~85℃
     Power save mode parameter, continued on after a power failure the last execution.
     Digital module with socket installation can be directly removed.
     Correction is settable voltage detection ( -0.3V~0.3V)
     With power-on timer with auto-start function
     Timing or delay time, number of times can be set, a single execution loop is executed multiple times
     External pulse signals (rising edge) or switch to trigger action time relay
     Relay load has three points of contact (a set of transformations): public, normally closed, normally 
     open points,
     Relay when it is not powered on, the relay releases, public and the normally closed points connected, 
     when the relay coil power subsequent electrical snap, common Terminal and open access
     Not short circuit the power supply connection
    P-1 time (timed) relay mode
    Use as a timed relay or relay, the default time range: 0-999 seconds or minutes, switch either according to 
    users ' demand to six hours/1-999 seconds to switch. (Before you buy, please contact)
    Loops:
    Time relay mode, the user can set the closing time of the relay release time T1 and T2, for example T1 set 
    for 3 seconds, T2 for 7 seconds, then relays the runtime can perform a 3 second another 7 seconds, release, 
    and so on.
    When you set the T1 and T2 time value, the system power down to save the set value, the next time you run P-
    1 mode is automatically included in the T1 time waiting to start running.
    Until T1 and T2 are set press SET time value, and then press the SET key to set the loop execution times, up 
    to 999 times. Number is set to 0 then the infinite loop. When the timer is running, press SET button for 
    three seconds from switching to cycle count shows the number of.
    Single execution time:
    If you only set the T1 (closing time) and T2 (release time) is 0, then the relay during a scheduled stop 
    running the T1 time, no longer cycle to run, this time can be used as a timer T1 time scheduled finish, 
    relay release, short press the ENTER key at this time, the system starts in time T1 time.
    If T1 (closing time) set to 0, the relay has been in a free State (does not start the run, normally closed 
    points connected, open fracture).
    P-1 mode can also be used in computer power on, for example, you set the relay time 2 seconds, then the 
    external switching input shorted, on the relay Board is scheduled for 2 seconds and then disconnect when 
    not.
    P-2 time (delay) and relay mode
    Fully compliant with the P-1 mode P-2 mode, relay action instead of only, that is, first to a T1 time relay 
    release, into the T2 time relay. For example, you set T1 relay release time is 3 seconds, pull-in time T2 
    for 7 seconds, then the relay run time delay of 3 seconds before (keep release) 7 seconds to snap again, and 
    so, if you set up a loop, then after the cycle has ended, the relay releases.
    Under P-1, P-2 mode, via external switch/pulse input interface, you can control the starting or stopping of 
    time relay. While the timer is running, external switch input does not affect the regular operation, pending 
    ended signal input external switches when you start the timer again.
    If you switch to source pulse signal is triggered to start timer relay, you need an external pulse rising 
    edge (from low level to high level), if the input level remains the same (or switch not to work) do not 
    trigger starts the timer. Voltage relay mode, the user can be set to control the upper and lower limit 
    values, when the voltage exceeds the limit of detection of the relay, again released only until the voltage 
    drops below a set limit value relays, this feature can be used for voltage monitoring, battery discharge and 
    so can also be used as a DC voltmeter, voltage meter display range: DC 0-99.9V, error 0.1V. Working power 
    supply voltage can be detected and shared, but not below the guaranteed operating voltage 10V.
    Short press SET key to enter the mode set the maximum voltage, voltage lower limit value status, voltage 
    calibration status, this product is factory-calibrated voltage accuracy, according to your own need to set 
    voltage correction -0.3~+0.3V, the default correction values are 0.
    Press and release SET button for three seconds, the relay State is negated, that detect more than limited-
    time relay on release, timed relay under test voltage is lower than the snap.
    P-3 mode
    Functions that can be used as a battery voltage monitoring, battery discharge, threaded through relay 
    power cement resistance load, can be used for battery discharge, when real time detection of battery 
    voltage is lower than the limit you set value, the relays to control loads automatically disconnected. 
    Factory default voltage control set upper and lower limits for the DC11.0V~10.5V.
    Under P3 mode, press SET, and then enter the higher limit voltage settings; press it again, enter the 
    lower limit voltage setting; press it once more, then enter the voltage calibration   status. You can 
    set the voltage correction -0.3~+0.3V, the default correction value is 0.
    P-4, P-5, voltage control relay mode
    P-4, P-5 models are "timed relay mode" and "voltage relay mode" combination or "time delay relay mode" 
    and "voltage relay mode" combination.
    When you set a timer to run parameters, enter "P-4" or "P-5" mode detects the voltage to control the 
    timer starts or stops. By press and release SET button for three seconds, select the voltage exceed the 
    CAP to start the timer, start timer or voltage is lower than the lower limit.
    P-4 mode when set to exceed the maximum voltage the timer is started, will remain below the lower 
    voltage relay release (normally open fracture, closed access). In contrast, when set to below the lower 
    voltage to start the timer, then timed relay will release on the higher voltage. And the only 
    difference is the P-5 model: P-5 mode, you start a timer when set to exceed the voltage limit, below 
    the minimum voltage relay, set to start below the lower voltage timer and timed relays on the higher 
    voltage will snap. In simple terms, P-4 initial release mode relay and relay initial P-5 mode to snap 
    State
    When timer starts running, you can press the ENTER key to view the countdown time
    By setting P-1 in timed mode, delay model and P-4, P-5 model P-2 combination program enables
    a variety of applications:
    1. The required test voltage across the 14.5V connected load for 5 minutes and then disconnect, load 
    disconnect when the voltage is less than 11.5V.
    Setting method: first to a P-1 mode, set T1 to time 5 minutes, T2 is 0, then out of P-1 into P-4, and 
    set the voltage up to 14.5V, voltage lower limit is 11.5V, load relay normally open.
    If you would like a voltage higher than the 14.5V disconnect the load, less than 11.5V load 5 minutes 
    to connect and then disconnect, press SET key for 3 seconds to inversion of relay logic.
    2. Test voltage exceeds 14.5V delay 5 minutes and then connected to a load, load disconnect when the 
    voltage is less than 11.5V.
    Setting method: first to a P-2 mode, set T1 to time 5 minutes, T2 is 0, then out of P-2 into P-4, and 
    set the voltage up to 14.5V, voltage lower limit is 11.5V, load relay normally open.
    3. The requested test voltage is lower than the 14.5V delay 5 minutes and then connected to a load, 
    load disconnect when the voltage is less than 11.5V
    Setting method: first to a P-1 mode, set T1 to time 5 minutes, T2 is 0, then out of P-1 into P-5, and 
    set the voltage up to 14.5V, voltage lower limit is 11.5V, load relay normally open. Long press SET key 
    for 3 seconds to start the timer when the voltage is lower than the lower limit, in this case, when 
    voltage is lower than the lower limit, you are starting a scheduled 5 minutes closed directly above the 
    upper limit of voltage.
    4. A battery 11.5V you want to switch to the charging circuit and then charged for 10 minutes, than the 
    12V switched to load circuits.
    Setting method:
    A: cathode of battery and charging circuit and a load is connected to the negative pole of the circuit, 
    the relay common Terminal to battery cathode, often closed-end to load circuit cathode, often beginning 
    to charge circuit cathode, to charge the battery when the relay is closed at this time, release switch 
    to the load circuit wires go into P-1 mode to set clock for 10 minutes, then entered the P-4, set up to 
    12V, Lower bound of 11.5V, by long pressing the SET key for 3 seconds close the relay over upper closed 
    below the lower limit, you detect battery voltage of more than 12V relay release, switches to the load 
    circuit power, implementation of charging when the battery voltage is less than 11.5V for 10 minutes.
    B: because some of the Chargers for charging pulse will make once the battery charging voltage when 
    mutation case, method 1 set, when charging the battery voltage immediately higher than the upper limit, 
    charging broken charging effect cannot be achieved. This situation can get into P-5, press SET key to 
    set below the minimum limit relay closed when 11.5V charge, start a scheduled 10-minute higher than 12V 
    charging then disconnected.
    5. The application as voltage trigger signal timing, that is, to input voltage signal timing, and goes 
    on to set the start relay.
    Example a: input voltage: 13V timing you want for more than 30 seconds, close the relay, voltage less 
    than 12V it reset all timers, relays do not work.
    Setting method: first to a P-2 time delay relay mode (open and closed), T1 set P-2 30 seconds, T2 0, 
    into the P-4, set the maximum voltage is 13V, lower bound of 12V, at this time, voltages greater than 
    maximum 13V starts after a delay of 30 seconds has been closed, when voltage less than 12V will reset 
    all timers, relays are not closed.
    Example b: input voltage of 13V time exceeds 30 seconds, the relay closing 2 seconds, and then 
    disconnect.
    Setting method: T1 set P-2 30 seconds, T2 for 2 seconds, then you can enter the P-4, and set the 
    voltage lower limit on a same.
    P-6 voltage limit mode
    P-6 mode can be set to detect voltage within the range lower limit on the release, over lower range 
    relay snap on, press and release SET button for three seconds, switch on the voltage within the lower 
    range snap over lower limits on the release.
    P-7 overrun and controlled voltage time relay
    P-7 mode can be set to detect voltage relay remains in the lower range on release relay voltage exceeds 
    lower range on the start time. (P-4, and P-5 mode every time detection only can set for over ceiling started 
    timer, or set for below lower started timer, and P-7 mode can set for every time detection over ceiling and 
    below lower timer are started timer) implementation finished following electric release (timer set for 
    close~ release unlimited cycle  will has been implementation, only  detection voltage in lower range 
    within only will stopped), long by SET key three seconds release, can make voltage in  lower range within 
    close switch for release.