W1209 50~100 digital temperature controller thermostat

The W1209 is an incredibly low cost yet highly functional thermostat controller. With this module you can intelligently control power to most types of electrical device based on the temperature sensed by the included high accuracy NTC temperature sensor. Although this module has an embedded microcontroller no programming knowledge is required. 3 tactile switches allow for configuring various parameters including on & off trigger temperatures. The on board relay can switch up to a maximum of 240V AC at 5A or 14V DC at 10A. The current temperature is displayed in degrees Centigrade via its 3 digit seven segment display and the current relay state by an on board LED.

Digital Voltmeter Ammeter DC 0-100V 10A Dual LED Monitor Panel, R

Digital voltmeter ammeter DC 0-100v 10a dual LED red blue monitor panel 100 percent brand new. Size: 48mm x 29mm x 21mm. Display colour: Red and blue LED (dual display). Display: 0. 28" LED digital. Operating voltage: DC 4. 5 ~ 30v. Measure voltage: DC 0 ~ 100v. Minimum resolution (v): 0. 1v. Operating current: 20ma.

GSM MODEM PCB SIM800/900

This GSM modem has a SIM800A/900 chip and RS232 interface while enables easy connection with the computer or laptop using the USB to Serial connector or to the microcontroller using the RS232 to TTL converter. Once you connect the SIM800/900 modem using the USB to RS232 connector, you need to find the correct COM port from the Device Manger of the USB to Serial Adapter. Then you can open Putty or any other terminal software and open an connection to that COM port at 9600 baud rate, which is the default baud rate of this modem. Once a serial connection is open through the computer or your microcontroller you can start sending the AT commands. When you send AT commands for example: "AT\r" you should receive back a reply from the SIM800 modem saying "OK" or other response depending on the command send. SIM800/900 is a complete Quad-band GSM/GPRS solution in a LGA type which can be embedded in the customer applications. SIM800H support Quad-band 50/900/1800/1900MHz, it can transmit Voice, SMS and data information with low power consumption. With size of Sim800/900, it can fiLS