Time Delay Relay Module (0-10 seconds) Other Batteries Shaking the module firmly might

Shaking the module firmly might help unstick the contacts

Security ID Tags

allowing it to replace or eliminate the need for other programmers like Microchip PICkit or Atmel AVRISP

Good design and shape

including mobile devices

Time Delay Relay Module (0-10 seconds) Other Batteries Shaking the module firmly mightTime Delay Relay Module This NE555 Delay Monostable Switch Module item is a timer switch module, based on the NE555 chip, a high performance timing CPU design. The power indicator LED and switch trigger timing indication LEDs. Timing from microseconds to long hours. Applicable to vehicle equipment delay to prevent car ignition, prevention of high sudden current to burn components and devices. This NE555 Delay Monostable Switch Module item is a timer