private function _make_power_operation($sid, $action) {
		$data = $this->_data;

		$data['sid'] = $sid;
		$data['action'] = $action;

		try {
			return $this->_make_request(self::POWER_OP_URL, $data, 'POST');
		} catch (\Exception $e) {
			throw new \Exception('Something gone wrong', 0, $e);
		}

		return true;
	}