Photocell Street Light Photo switch Sensor Auto On Off Switch AC 220V in Pakistan

Unique 1-Wire interface requires only one port pin for communication Each device has a unique 64-bit serial code stored in an onboard ROM Multidrop capability simplifies distributed temperature sensing applications Requires no external components Can be powered from data line. Power supply range is 3.0V to 5.5V Measures temperatures from –55°C to +125°C (–67°F to +257°F) ±0.5°C accuracy from –10°C to +85°C Thermometer resolution is user-selectable from 9 to 12 bits Converts temperature to 12-bit digital word in 750ms (max.) User-definable nonvolatile (NV) alarm settings

MQ-9 MQ9 Carbon Monoxide Gas Alarm Combustible Sensor Module For Arduino Suitable for home or factory gas leakage monitoring devices. Have better sensitivity to CARBON MONOXIDE, METHANE, LIQUEFIED PETROLEUM GAS. High quality dual-panel design, with power indicator and TTL signal output instructions. DO switching signal (TTL) output and AO analog signal output. TTL output valid signal is low. (When the output low signal is on, it can be directly connected micro-controller or relay module.) Analog output voltage: the higher concentration, the higher voltage. Four screw holes, easy positioning. Long life and stability, quick response and resume. Input voltage: DC 5?0.2V Power: 150mA DO output: TTL digital 0 and 1 (0.1 and 5V) AO output: 0.1-0.3V (relatively clean), the highest concentration voltage is about 4V. Dimensions: 32(L) * 20(W) * 22(H) mm AO ? analog signal output