Intelligent automatic sensor for turning on / off the sound by sound (95-75dB) and light (threshold 6 lux) for a specified time (50 + 10seconds) of alternating current 160 - 250 V.

Description As the name implies, the sensorit is intended for inclusion of lighting in areas with low passability where the person is for a short time (pantry, attic, elevator, stairwells, etc.). The cost of the sensor at the time of purchase at the current dollar exchange rate is about 80 rubles. / PC. The sensor can work with LED (LED) andcompact fluorescent lamps (CFL) with power up to 25 W; incandescent lamps (LON) with a power of up to 60 watts. The turn-on time for the devices I ordered is from 46 to 54 seconds (according to the passport, 50 + 10s are declared). Triggering (inclusion of lighting) comes from the noise of a bunch of keys, voices and etc. at a lighting level below 6 lux, i.e. Daylight does not turn on. It is very convenient for saving in old-built houses or where there are many elderly people who like to “burn” the light on the stairs day and night. As a rule, in an old housing stock, artificial lighting is represented by lamps with LON (up to 60 W) and fluorescent lamps (LL, “tubes”). In my case, lamps with LON are used. For testing by residents, the sensor was connected directly to a lamp with a LON (40W) on the elevator, as there, people practically do not stay longer than 30-40 seconds (the house is 6-storey, the elevator rises from the 1st to the 6th floor for about 20-30 seconds). Given the fact that the voltage in the network changes, as a rule, downward to 210V, which is acceptable for standards, then the actual power testedLON varies from 32 watts to 40 watts. If you consider that in my house the lighting is “on” around the clock, it turns out that with real power LON Rn = 32 (W) = 0.032 (kW) and with an electricity tariff of day / night 3.91 / 2.30 (rubles / kW * h) the lamp will consume for:
1 day - Ср1 = 0.032 * (3.91 * 16 + 2.30 * 8) = 2.59 (rub.)
30 days - Ср30 = 30 * Ср1 = 77.7 (rub.).
In fact, the lamp will turn on for a whilein the evening and at night, but the power consumed by the lamp in the evening will be higher due to a higher voltage (outside the peak mode), that is, when averaging, the calculation can be taken to be correct. Those. the payback period of the product is about 1 month. When using LON with a power of 60 W, the payback period of the product is reduced proportionally by 1.5 times. There are 58 apartments in my house, on average, they charge 90 rubles a month for common house lighting, with 90% of the energy consumed at the daily rate. Given that the sensor pays for itself in 1 month and allows you to save about 77 rubles at the current tariff, i.e. 77/58 = 1.32 rubles. per month when paying for common house electricity from each account to one apartment. In addition to saving, the device brings functional and aesthetic satisfaction (approaching green standards, releasing additional power in peak consumption modes, reducing the need for connected power, etc.), because not every house has similar sensors. If you consider that only one lamp allows you to save about 1.32 / 90 = 0.014 or 1.4% of electricity per month for my house, then I consider the use of such devices justified, especially considering the price. For the stairwell, I recommend the use of infrared sensors with the ability to control the on-time and sensitivity duplicated with a switch (for the case of long-term inclusion of lighting on the stairs or other places if necessary). When buying a device in the seller’s description, a plastic optical lens was applied to the device’s body to focus the light on a photoresistor, which in reality was not. At my request, the seller corrected the description. It was also noted that the board inside the device was not fixed to the case with a screw, although a special mounting hole was provided. I safely fixed the fee myself,in order not to damage the photoresistor installed in a special guide tube in the housing when connecting the wires. One of the legs of the photoresistor is isolated. If necessary, open the back cover of the device carefully, remove the board without distortions, as there is a chance of damage to the photoresistor or its legs.
Pros: Real efficiency. Compact body. Good design and soldering quality. A thyristor was used as a switching device (PCR606J; the maximum average value for a period of the current in the open state is 0.6A; the maximum repetitive pulse voltage in the closed state is 600V; the maximum pulse current in the open state is 6A; if it exits over time If it is damaged, you can replace it with a more powerful MCR100-8> 0.8A, 600B, 10A), and not a relay (silent). High sensitivity. Low consumption (0.2 VA). Fairly long wires (15cm). Low cost. An excellent solution for the price / quality parameter. Four-wire connection (if necessary, three-wire). A wide range of capacities and types of loads (lamps). A cheap solution to upgrade obsolete fixtures. Simple fasteners to the surface (for 2 screws). Wide range of operating voltage (suitable for use in power supply networks with voltage below the norm).
Minuses: The need to fix the board to the case (maybe I just came across such devices). The absence of a plastic lens on the housing above the photoresistor (difficulty cleaning the device if dusty). The connection diagram is only in Chinese, but intuitive [red wire - phase (L), black and white wires in the middle - neutral (working zero, N), extreme white wire - switched phase (T)]. 20 AWG caliber wires (0.518 sq. Mm), which is sufficient for the loads specified by the manufacturer (operating voltage 600V, continuous current up to 11 A), but theoretically, from the point of view of current standards in the Russian Federation, it is desirable to increase to 1.5 sq. Mm to ensure resistance in case of short circuit. The absence of a fuse inside the device (protection only by means of a circuit breaker for the lighting line, preferably with a rating of not more than 10 A with characteristic “B” or “C”). Lack of adjustments for turn-on time, light level (offset by cost). According to other people's reviews on the product, there is a “swimming” of the on-time parameter for individual copies, mainly to a smaller side, and parties with a turn-on time of 34-36 seconds, 42-44 seconds, 54-56 seconds are distinguished.
Universal wiring diagram:When installing the sensor in addition to the lampFor working lighting of common premises, it is necessary to provide a local switch or switch on the basis of the clauses of the following current document “Resolution of the Gosstroy of the Russian Federation of September 27, 2003 N 170“ On approval of the Rules and norms of technical operation of the housing stock ”. Excerpt from the document: “5.6.17. In houses, for switching on the lamps for working lighting in common-building premises, it is allowed to use switches with a time delay for shutting down. When using these switches, the lighting in the entrance hall (on the ground floor near the stairs) should remain on during the whole dark time of the day, and in case of insufficient natural light, around the clock and at elevators.
When using time-delay switchesto disconnect them, it is necessary to install them on each floor with the possibility of prompt inclusion in a constant mode of operation during the cleaning of the stairwell, furniture transfer, etc.
5.6.18. In houses of any number of floors, individual switches (including timed ones) should be installed for rare-use lamps (floor "pockets", receiving valves of garbage chutes, etc.). "
Note: I plan to add a review on the use of inexpensive infrared sensors (while on the road) with several adjustments. The approximate budget for the completion of one lamp with a switch is as follows: terminal block (30 rubles) + switch, cx.6, O / U (40 rubles) + PuGV (PV3) 1 * 1.5 3m or VVGng (A) -LS 3x1.5 1m (30 rubles) + sensor (80 rubles) + corrugated pipe f16 1m (5 rubles) + holder f16mm (2 rubles) + plastic dowel NAT6 5pcs. (5rub.) + Self-tapping screw 3.2 (3.8) x32 5pcs. (3 rubles) = 196 rubles. If the lamp is compact, then you need a terminal box of 20 rubles. If you connect directly without a switch, as I had in test mode for the first week, it only took a terminal block. The switch was installed at a height of 1.7m (the maximum installation height of the switches for general lighting fixtures) so as not to indulge. Do not forget to warn the neighbors in the stairwell or the common hall before installing the device about the principles of operation and use, as someone may have conservative views and may call for repair service because of a “non-working” nonstop (non-stop) lamp. The money saved will go to feed the cat. Two months later, all the lamps operating in a constant mode burned out on the stairwell, with the exception of the lamp connected through the sensor. The sensor is working properly and has already paid off. The service for replacing an incandescent lamp in our housing and communal services costs 26.62 rubles. (with VAT) + the cost of the lamp is about 10 rubles. Thus, the sensor allows you to save on the operation of lighting devices additional means of residents by increasing the lamp life.